# Retell AI Reviews **Vendor:** Retell AI **Category:** [AI Agents For Business Operations](https://www.g2.com/categories/ai-agents-for-business-operations) **Average Rating:** 4.8/5.0 **Total Reviews:** 2,187 ## About Retell AI Retell AI is a powerful conversational AI platform designed to automate voice, SMS, and chat interactions with natural, humanlike performance. Built on top of your choice of large language models (LLMs), Retell allows teams to spin up real-time AI agents that handle calls, trigger messaging workflows, and integrate seamlessly into your existing systems—all without writing code. At its core, Retell delivers Voice Agent Automation that feels indistinguishable from speaking with a real person. Calls are handled by LLM-native agents that respond within 600 milliseconds, support multi-turn logic, and operate across 31+ languages with native-quality speech. You can build and manage your own agent flows using an intuitive drag-and-drop builder that supports IVR trees, dynamic transfers, real-time webhooks, and CRM integration. Whether you’re scheduling appointments, answering FAQs, or qualifying leads, these agents are fast, reliable, and production-ready. Beyond voice, Retell also enables SMS and chat automation. Agents can send contextual messages during or after phone calls, or operate as standalone text/chat bots. You can use Twilio numbers or bring your own for outbound campaigns, enabling flexible, multi-channel engagement. To ensure quality and insight, Retell offers built-in testing and QA tools. You can simulate conversations, A/B test call flows, and monitor live call data through detailed dashboards. Track CSAT, latency, sentiment, and conversation outcomes—all in one place. Voice agents can be deployed via Twilio, SIP, branded caller ID, or embedded using Retell’s web SDKs. Unlike legacy IVR or scripted systems, Retell is built from the ground up to be AI-native and fully customizable. Whether you’re in healthcare, logistics, fintech, or customer support, Retell’s platform lets you scale personalized conversations across channels—boosting customer satisfaction and reducing operational costs. ## Retell AI Pros & Cons **What users like:** - Users find Retell AI to be **easy to use** with a user-friendly interface and straightforward setup process. (495 reviews) - Users appreciate the **helpful interface** of Retell AI, which simplifies the creation of AI voice agents for all skill levels. (144 reviews) - Users appreciate the **easy setup and user-friendly interface** of Retell AI, enhancing their overall experience and learning process. (142 reviews) - Users value the **seamless integrations** of Retell AI, enhancing automation and streamlining workflows effortlessly. (119 reviews) - Users value the **simplicity of Retell AI** , highlighting its ease of use and clear dashboard for beginners. (112 reviews) - Users appreciate the **easy integrations** of Retell AI, which enhance automation and customization with third-party voice providers. (99 reviews) - Users find the **setup process incredibly easy** and user-friendly, enhancing the overall experience with Retell AI. (96 reviews) - Customizability (90 reviews) - Efficiency (82 reviews) - Easy Setup (75 reviews) **What users dislike:** - Users face **missing features** like limited international number support and agent management, impacting usability for agencies. (116 reviews) - Users find the **cost per call prohibitive** , particularly for testing the voice agent's functionality. (87 reviews) - Users find the **steep learning curve** of Retell AI challenging, especially without a technical background or guidance. (80 reviews) - Users express frustration over **limited features** in Retell AI, especially regarding lack of integrations and testing capabilities. (66 reviews) - Users encounter a **poor understanding** of Retell AI's capabilities, leading to confusion and inefficiencies in usage. (64 reviews) - Inaccuracy (58 reviews) - Users experience **integration issues** with Retell AI, particularly with third-party tools and SMS setups being complicated. (49 reviews) - Complexity (40 reviews) - Limited Language Support (40 reviews) - Users wish for more **customization options** , particularly to enhance the male voice features in Retell AI. (37 reviews) ## Retell AI Reviews ### 1. Polished UX for Building Autonomous AI Call Agents with Twilio & Telnyx Integrations **Rating:** 5.0/5.0 stars **Reviewed by:** Rishav K. | AI Engineer, Mid-Market (51-1000 emp.) **Reviewed Date:** April 30, 2026 **What do you like best about Retell AI?** It’s fairly straightforward to build an autonomous AI phone-call agent, including real-time function calling and call transfers. I’m also impressed by the flow-building UX; it feels polished and easy to work with, especially thanks to features like batch calling and integrations with Twilio and Telnyx. **What do you dislike about Retell AI?** So far, I haven’t disliked anything about it. It has great features, and for me it’s been working well. **What problems is Retell AI solving and how is that benefiting you?** Retell AI is solving some of the key edge problems in voice AI, such as latency, unnatural pauses, and low reliability. Since we use calling agents for several use cases, it works great for us. Now it feels like we’re talking to a real human sitting behind the call, not a bot. Also, with the use of voice mapping, it’s easier to sound like a real person based on different geographic locations and the tones people use there. ### 2. Strong Real-Time Conversational AI Solution **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Apparel & Fashion **Reviewed Date:** May 18, 2026 **What do you like best about Retell AI?** What I like most about Retell AI is the low-latency conversational performance and how easy it is to build production-ready voice agents. The call quality feels natural, the APIs are developer-friendly, and integrations with LLMs, SIP, and telephony providers are straightforward. It significantly reduces the complexity of building AI phone systems while still allowing deep customization for workflows, prompts, and call handling logic. **What do you dislike about Retell AI?** One downside of Retell AI is that advanced configurations can take time to optimize, especially for complex conversational flows and edge cases. Pricing can also become expensive at scale depending on call volume and model usage. Additionally, some areas of the documentation could be more detailed for troubleshooting and enterprise-level deployment scenarios. **What problems is Retell AI solving and how is that benefiting you?** Retell AI helps automate my business outreach by handling voice agent cold calls without needing a human team. It allows me to scale lead generation and contact more prospects in less time. This reduces manual effort and improves efficiency in sales outreach. It also lowers operational costs while keeping calling available 24/7. Overall, it helps me grow my business faster through automated and consistent cold calling. ### 3. Review **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Alternative Medicine **Reviewed Date:** May 14, 2026 ### 4. easy to set up and 3rd party integ **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Program Development **Reviewed Date:** May 12, 2026 **What do you like best about Retell AI?** Best-in-class low latency (~600ms) This is the standout feature. Conversations feel shockingly natural — quick responses, excellent interruption handling, and smooth turn-taking. It’s currently one of the most human-like experiences you can get in production voice agents. Realistic voices + strong interruption handling Voices (especially when paired with ElevenLabs or similar) sound very natural, and the agent handles people cutting in or talking over it without breaking. Developer-friendly with great flexibility You can mix different LLMs, voice providers, and telephony (Twilio, Telnyx, SIP trunking, etc.). The visual flow builder + code nodes gives you both no-code speed and deep customization. Real-time function calling & integrations It shines when booking appointments, checking calendars, updating CRMs, or pulling live data during the call. Transparent pay-as-you-go pricing + generous free tier $0.07+/min + $10 free credits and 20 free concurrent calls makes it easy to test and scale without big upfront commitments. Strong for real business use cases (especially dental/medical, support, outbound) **What do you dislike about Retell AI?** Steep learning curve for non-technical users While it has a visual builder, building truly reliable agents still often needs prompt engineering and some technical knowledge. Unpredictable total cost at scale You pay separately for LLM, STT, TTS, telephony, etc. The final per-minute cost can climb higher than expected if you're not careful. Support can be slow Many users report that customer support is limited (mostly Discord/community), especially for urgent production issues. Still requires work for complex flows It’s not fully “set it and forget it.” You’ll spend time testing and refining to handle edge cases well. Limited native phone numbers For international or certain regions, you often need to bring your own carrier (like Twilio). **What problems is Retell AI solving and how is that benefiting you?** Missed or unanswered calls + poor after-hours support Traditional phone lines and receptionists can't be available 24/7. Many businesses lose leads or frustrate customers with long wait times or voicemails. High operational costs of call centers / staff Human agents are expensive ($29–$42/hour including overhead). Repetitive calls (scheduling, reminders, FAQs, status checks) burn out staff and drive high turnover (30–45%). Rigid, frustrating IVR systems Old phone menus feel robotic and force callers through frustrating button-pressing. They can't handle natural conversation or interruptions. Slow or impossible scaling Handling high call volume requires hiring, training, and managing more people. Peaks (e.g., evenings or Mondays) create bottlenecks. Lack of real-time integration with tools Manually updating calendars, CRMs, or records during/after calls is time-consuming and error-prone. Inconsistent or low-quality customer experience Wait times, tired agents, and human errors lead to lower satisfaction. ### 5. A sneakpeak into the future of the world - How RetellAI is bringing the future to today **Rating:** 5.0/5.0 stars **Reviewed by:** jj W. | Director of Operations, Small-Business (50 or fewer emp.) **Reviewed Date:** May 12, 2026 **What do you like best about Retell AI?** I love how there are not many companies that allow users to do what Retell does. By this, I mean I have used the tool so much that I can literally create a functional AI Voice Agent/ Receptionist for anyone or any business in as little as 30 minutes. **What do you dislike about Retell AI?** I understand you're still refining things on your end, but the phone number verification process was a bit confusing and long. As a small business owner, I understand that it takes time for processes to be refined, so this was nothing big enough to deter me from using RetellAI. Still, I also want to state that I have already created phone numbers (and will soon create separate accounts) for about 5 of our clients, with more on the way soon, and it would be nice to know that the phone number verification process is quicker now than it was earlier this year. **What problems is Retell AI solving and how is that benefiting you?** It is solving the need to have a call center or front office receptionist for starters. It is also cool to have a knowledge base that you can train an agent on, and then speak to that agent, as you would with any other person, to retrieve the exact information you are looking for when you need it. ### 6. So Human like it's awesome! **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting **Reviewed Date:** May 12, 2026 **What do you like best about Retell AI?** How realistic the conversation's are, the voices are truely great. I useed SignalWire, and Trilio, and Retell is the best as far as I am concerned! The Support team is 24/7 and are equally amazing. Highly recommend and I don't recommend many products. I don't have time, and most aren't worth a review. I never heard of Retell, but I am glad I stumbled upon them and now I'll help promote them to anyone looking for a truely human voice agent. **What do you dislike about Retell AI?** Nothing, great product! Once you get your agent dialed in, it works amazing! could use more Voices? But I found the ones that work for my business, with the selection they have. Too many and you spend days looking for a perfect voice. I think I like the less is more, I know it's faster and easier the way you have it now. **What problems is Retell AI solving and how is that benefiting you?** It's helping me solve my clients problems. And doing it 24/7 and I can have a life while it answers calls and prequalifies the callers I get. Most need an answering system because leads will call the "Next Guy" if they don't answer when they call. ### 7. The Future of AI Calling – Retell AI Review **Rating:** 5.0/5.0 stars **Reviewed by:** Shyam A. | Project Manager, Small-Business (50 or fewer emp.) **Reviewed Date:** May 11, 2026 **What do you like best about Retell AI?** The conversations don’t feel robotic like most AI calling tools. The voice responses sound natural, the response time is fast, and it can handle real conversations smoothly without awkward pauses. I also liked how easy it was to build and customize call flows based on different business needs. Most of the important features are already available within the platform itself, so there’s very little extra configuration or setup needed compared to other tools. The integrations and automation features save a lot of manual work, especially for customer support and follow-up calls. Overall, it feels like a practical, complete, and reliable platform rather than just another AI demo tool. **What do you dislike about Retell AI?** while the platform is powerful, some advanced customizations and workflow debugging can take time to fully understand in the beginning. There’s a learning curve when trying to fine-tune conversations for more complex use cases. **What problems is Retell AI solving and how is that benefiting you?** It is solving the problem of handling repetitive and time-consuming business calls manually. Instead of relying completely on human agents for every inbound or outbound call, the platform automates conversations using realistic AI voice agents that can answer questions, schedule appointments, qualify leads, and handle support requests efficiently. For me, this has been beneficial because it reduces manual workload, saves operational time, and ensures calls are handled quickly without long wait times. Another big advantage is that most of the required features, integrations, testing tools, and automation capabilities are already available within the platform, so we did not have to spend extra time on heavy configurations or multiple third-party setups. It made the overall implementation faster, smoother, and much easier to manage. ### 8. Best AI Voice Platform for Building Dental Clinic Receptionists **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software **Reviewed Date:** May 09, 2026 **What do you like best about Retell AI?** Retell AI makes it incredibly easy to build production-ready AI voice agents. The webhook integration with n8n is seamless, the LLM playground makes testing fast, the Knowledge Base feature is a game changer for FAQ handling, and the voice quality is natural enough for real clinic reception use. I built a fully functional AI dental receptionist with 8 functions, after-hours mode, and GHL CRM integration in under two weeks. **What do you dislike about Retell AI?** The LLM chat playground does not save conversation history, which makes iterative testing harder. Pricing transparency for Knowledge Base usage could be clearer. Would also love more built-in error logging when webhook calls fail during live calls. **What problems is Retell AI solving and how is that benefiting you?** Dental clinics lose patients every day due to missed calls, after-hours inquiries, and overwhelmed front desk staff. Retell AI allowed me to build a 24/7 AI receptionist that handles appointment booking, rescheduling, cancellations, after-hours emergencies, and FAQ — all without human intervention. This directly reduces missed calls, improves patient experience, and frees up clinic staff to focus on in-person care. ### 9. Highly Recommend this Beautiful Retellai **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Hospitality **Reviewed Date:** May 06, 2026 **What do you like best about Retell AI?** Easy to use , the AI AGENT VOICE IS like Human and does its job , i am very impressed about how smart this system is and easy to Navigate **What do you dislike about Retell AI?** I hope to get a good price on my usage , i am a start up with Bootstrap operations , i am already impressed with the way Retell Ai operates , Hope there is a credit for startups to get their foot in the door get some wins and opportunity to re invest the money made back in to Retell ai [ like a Retell capital allocated as credit from the money earned **What problems is Retell AI solving and how is that benefiting you?** I was personally making outbound calls now Retell Ai is helping me in outbound calls screen the customers , all i do is just follow up with the screened customers , this saves me a lot of heart ace some times i get a lot of rejection and it has a toll on my emotions , But with retell ai it takes the front line staff tasks and i just follow up with qualified Leeds who showed interest ### 10. Well Designed and Comprehensive Platform for the voice agents **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising **Reviewed Date:** May 02, 2026 **What do you like best about Retell AI?** What I like most about Retell AI is how quickly it enables the creation of production-ready AI voice agents without needing to build complex telephony or speech pipelines from scratch. The API-first design makes it easy to integrate with backend systems, and the latency is low enough to support near real-time conversational experiences. The platform also abstracts a lot of difficult infrastructure work (speech-to-text, LLM orchestration, text-to-speech, call handling), which significantly reduces development time. For developers, the webhook and function-calling style integrations are especially useful for connecting external tools and APIs. **What do you dislike about Retell AI?** One limitation is that customization can feel somewhat constrained when trying to implement very complex or highly specialized conversational logic. While the system works well for standard use cases, deeper control over conversation state, routing logic, or low-level audio handling is limited compared to fully self-built pipelines. Another downside is that pricing can become significant at scale, especially for high-volume voice applications. Additionally, debugging multi-step conversational flows is not always very transparent, which can make troubleshooting edge cases slower than expected. **What problems is Retell AI solving and how is that benefiting you?** Retell AI helps solve the complexity of building real-time conversational voice agents by abstracting the full voice stack (speech-to-text, LLM reasoning, and text-to-speech) into a single integrated system. This removes the need to independently manage multiple services and significantly reduces engineering overhead. It also solves operational challenges in building scalable voice-based automation systems, such as handling concurrent calls, maintaining low latency, and integrating with backend business logic through APIs. The main benefit is faster deployment of production-ready AI voice agents, allowing me to focus more on business logic and workflow design rather than infrastructure. This results in reduced development time, easier experimentation, and quicker iteration for AI-driven customer interaction systems. ### 11. Blown away how well Retell AI is able to answer calls. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Alternative Medicine **Reviewed Date:** May 01, 2026 **What do you like best about Retell AI?** What I like best about Retell AI is the combination of cost, value, and quality. As a small business owner just getting started, it’s been incredibly helpful to have access to a service that feels premium without a premium price tag. It allows me to present a high-quality, professional front end to my customers, which is huge for building trust and credibility early on. It genuinely feels like I’m offering something polished and established, even while I’m still growing my brand. **What do you dislike about Retell AI?** At this stage, I don’t have any major complaints, but there are a couple of areas where I think Retell AI could improve. Since everything is still new to me, more structured training resources or tutorials would be really helpful—especially around dialing in the personality and behavior of the AI agent. That’s been one of the more challenging parts to fine-tune. I’ve been able to make progress using tools like ChatGPT, but having clearer guidance directly within the platform would make the process smoother and faster. I’ve also noticed a slight delay between when a user speaks and when the AI responds. It’s not a dealbreaker, but reducing that lag would make the experience feel even more natural and seamless. **What problems is Retell AI solving and how is that benefiting you?** Retell AI is solving a major problem for me. I wanted a premium, professional, and knowledgeable voice answering my phones, and it delivers on that. I’ve even tested it with multiple three-way calls with friends and family, and every single person was genuinely impressed with how natural and professional the agent sounded. It gives me confidence that I’m presenting a high-quality first impression to anyone who contacts my business. ### 12. This is super Fantastic **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Health, Wellness and Fitness **Reviewed Date:** April 30, 2026 **What do you like best about Retell AI?** Retell AI makes building and deploying voice AI agents incredibly fast and simple. The real-time conversation quality, low latency, and natural-sounding responses stand out the most. It’s especially helpful for creating scalable customer support or automation systems without needing deep technical complexity. The platform feels developer-friendly while still being powerful enough for real-world use cases. **What do you dislike about Retell AI?** While Retell AI is powerful, it can feel limited in customization for more advanced or niche use cases. Debugging conversations and fine-tuning behavior isn’t always straightforward. Pricing and scalability may also become concerns for smaller developers or startups. Additionally, better documentation and clearer onboarding would make the platform more accessible for beginners. **What problems is Retell AI solving and how is that benefiting you?** Retell AI solves the problem of building reliable, real-time voice agents without complex infrastructure. Instead of spending weeks setting up speech-to-text, latency optimization, and conversation handling, I can quickly deploy AI agents that handle calls, automate responses, and manage user interactions efficiently. This benefits me by saving development time, reducing operational costs, and allowing me to focus more on building useful AI products rather than dealing with backend complexity. ### 13. Highly recommend Retell AI if you want more customers without extra staff. **Rating:** 5.0/5.0 stars **Reviewed by:** John L. **Reviewed Date:** April 28, 2026 **What do you like best about Retell AI?** Retell AI has been a game-changer for my HVAC business posted on Craigslist, and I’ve been getting a lot more qualified leads and service calls. The AI sounds very natural, handles customer conversations well, books jobs for me, and works great even when I’m out on calls. Super easy to use and it’s already paying for itself many times over. **What do you dislike about Retell AI?** I don’t have any major dislikes at the moment. The only small thing is that it occasionally needs a bit of fine-tuning for very specific HVAC technical questions, but overall it’s performing excellently. **What problems is Retell AI solving and how is that benefiting you?** Retell AI is solving my biggest problems as an HVAC business owner — not getting enough leads and missing calls while I'm out on jobs. The AI now answers calls 24/7, sounds completely natural, qualifies customers, answers service questions, and books appointments for me. This has dramatically increased my qualified leads and booked jobs without needing extra staff. ### 14. Easy to set-up, easy to use, and incredibly intelligent. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consulting **Reviewed Date:** April 27, 2026 **What do you like best about Retell AI?** Once you can figure out the interface, it is super simple to use. The voices sound very natural, and the intelligence layer is pretty stunning. AI does a fantastic job of capturing context, and if you take the time to set up the after-call analysis features properly, you get incredibly rich details. **What do you dislike about Retell AI?** It can get expensive. If you are getting a high number of calls and using an advanced AI model to interpret and guide the conversation, expect to pay upwards of $1 per call for 4 - 5 minutes. **What problems is Retell AI solving and how is that benefiting you?** Retell is solving the problem of just having a plain jane answering machine. It allows me to not have to pick up calls during periods of intense work. Retell can also answer many basic questions that might take up a decent portion of my day and allows me the first level triage that I've been needing, without the expense of a live receptionist. ### 15. Easy use **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software **Reviewed Date:** April 25, 2026 **What do you like best about Retell AI?** What I like most about Retell AI is how fast it is to build realistic voice agents that actually sound natural and useful for real businesses. The latency is low, the voice quality feels human, and the workflow for connecting telephony with AI is much cleaner than many other platforms. It makes it practical to build sales, support, and appointment agents without creating unnecessary complexity. **What do you dislike about Retell AI?** One downside is that pricing can become expensive quickly when testing multiple calls or scaling to many customers. Also, some advanced integrations and setup steps can feel technical for non-developers, especially around telephony providers and production deployment. Better onboarding for business users and clearer cost visibility would make the platform even stronger. **What problems is Retell AI solving and how is that benefiting you?** Retell AI is helping solve lead response delays, missed opportunities, and the lack of consistent follow-up in sales processes. For businesses like ours, many potential customers ask for information but never receive immediate attention. With voice AI agents, we can qualify leads faster, schedule demos automatically, and provide instant responses without depending entirely on human availability. This improves conversion rates, saves time, and creates a much better customer experience. ### 16. Best voice AI platform I've tested that actually sounds human **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Hospital & Health Care **Reviewed Date:** May 07, 2026 **What do you like best about Retell AI?** The call quality and latency are genuinely impressive — conversations feel natural, not robotic. Multilingual support works really well for Italian and Dutch out of the box. The conversation flow builder is intuitive and the Cal.com integration for live booking during calls works perfectly. Pay-as-you-go pricing is fair for agencies starting out. **What do you dislike about Retell AI?** European phone numbers are not available directly in the dashboard — you have to connect Twilio or Telnyx separately, which adds a few extra steps for non-US deployments. Would be great to have native European number purchasing built in. **What problems is Retell AI solving and how is that benefiting you?** We build AI voice receptionist agents for European businesses — clinics, restaurants, agencies — that miss calls during peak hours or after closing. Retell lets us deploy natural-sounding multilingual agents that answer every call, book appointments live, and send confirmations automatically. It replaced what would otherwise require a full-time receptionist for each client. ### 17. A 10/10 app for phone calls **Rating:** 5.0/5.0 stars **Reviewed by:** Avosist . **Reviewed Date:** April 23, 2026 **What do you like best about Retell AI?** Retell AI stands out for its ability to deliver highly natural, human-like voice interactions with minimal latency. The platform is straightforward to integrate, and its APIs are well-structured, which reduces development time significantly. Its real-time capabilities and reliability make it especially useful for building conversational agents that feel responsive and fluid rather than robotic. The customization options also allow for precise control over tone and behavior, which is critical for production-grade applications. **What do you dislike about Retell AI?** While Retell AI performs well in real-time scenarios, there are limitations in deeper conversational control and edge-case handling. Fine-tuning nuanced behaviors can require additional workarounds, and documentation, although decent, can lack depth in more complex use cases. Pricing can also become a concern at scale, especially for high-volume applications, making cost optimization an important consideration. **What problems is Retell AI solving and how is that benefiting you?** Retell AI addresses the challenge of building real-time, human-like voice agents without requiring complex infrastructure or deep expertise in speech systems. It simplifies tasks like speech recognition, response generation, and voice synthesis into a unified workflow. This reduces development overhead and allows faster deployment of conversational systems. As a result, it improves efficiency by automating interactions that would otherwise require human operators, while maintaining a level of responsiveness and naturalness that enhances user experience. ### 18. love it **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Financial Services **Reviewed Date:** April 20, 2026 **What do you like best about Retell AI?** Retell AI makes scaling outbound calls extremely efficient. The ability to run high-volume, consistent conversations without human fatigue is a huge advantage. It handles initial outreach, qualification, and follow-ups well, which frees up my time to focus on closing deals. The customization of scripts and real-time responsiveness also helps it feel more natural compared to other AI dialers. **What do you dislike about Retell AI?** There are still limitations around handling edge-case conversations and sounding fully natural in every scenario. Sometimes the AI can miss context or respond slightly off-script, which can affect conversion. Setup and fine-tuning also take time to get right, and integrations could be smoother to better fit into existing workflows. **What problems is Retell AI solving and how is that benefiting you?** Retell AI solves the biggest bottleneck in outbound—time and consistency. Instead of relying on manual dialing, it allows me to reach a high volume of prospects instantly while maintaining a consistent message. It helps with initial outreach, filtering out unqualified leads, and engaging interested prospects before I ever get on the phone. This increases efficiency, lowers labor costs, and lets me focus strictly on closing deals rather than spending hours prospecting. ### 19. Finally, an AI phone agent that doesn't sound like a robot **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software **Reviewed Date:** April 19, 2026 **What do you like best about Retell AI?** We integrated Retell AI into our lead qualification workflow and the results have been impressive. The voices are ultra-realistic; most of our customers don't even realize they are speaking to an AI agent at first. It has significantly reduced our team's repetitive call load by handling FAQs and booking appointments directly into our CRM. I love the transparent pay-as-you-go pricing, which made it easy to start small and scale as we saw the ROI. The dashboard is intuitive, and the built-in analytics give us clear insights into call sentiment and success rates. Highly recommend for any business looking to automate their phone operations. **What do you dislike about Retell AI?** The built-in analytics give us clear insights into call sentiment. The only small downside is that the dashboard can feel a bit overwhelming at first because of all the features, but once you get the hang of it, it’s incredibly powerful. Highly recommend for any business looking to automate operations. **What problems is Retell AI solving and how is that benefiting you?** Retell AI has been a game-changer for our workflow, specifically solving the high-latency issues we faced with other voice providers. By achieving consistent sub-second response times, it has allowed us to automate our lead qualification and appointment scheduling without the conversation feeling robotic or disjointed. The biggest benefit for us has been the seamless CRM integration and the ability to handle unlimited concurrent calls, which has significantly reduced our operational overhead and missed opportunities. The only minor drawback is that the dashboard's learning curve can be a bit steep for non-technical users at first, but the depth of customization it offers more than makes up for it. It’s easily the most robust and realistic voice orchestration platform on the market right now. ### 20. It is the best tool for creating voice agents with AI - Mili Pérez **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software **Reviewed Date:** April 12, 2026 **What do you like best about Retell AI?** The most notable feature is the extremely low latency, which allows for fluid conversations without the awkward silences typical of other voice services. The model's ability to handle interruptions naturally is above average, greatly facilitating the development of agents that truly seem human in support or sales environments. And the ease of integration through its API and the robustness of its Webhooks. It offers granular control over the call status and the transition between conversation states. The quality of the voice synthesis, combined with fast language processing logic, makes it one of the most solid solutions for scaling voice operations. **What do you dislike about Retell AI?** The pricing model can become expensive when scaled to a very high call volume, especially when compared to "in-house" implementations of open-source models. Additionally, there is a lack of flexibility to customize certain parameters of proprietary voice models without relying entirely on their closed infrastructure. **What problems is Retell AI solving and how is that benefiting you?** Retell solves the critical problem of round-trip latency in conversational voice systems. It eliminates the complexity of manually integrating STT, LLM, and TTS, offering orchestration that allows for responses in milliseconds. At the enterprise level, this benefits me by drastically reducing "churn" in automated calls, as the user experience is indistinguishable from a human interaction. Additionally, the native management of interruptions prevents audio overlaps that usually break the logic of conventional agents. Another issue it resolves is the technical fragmentation and instability of WebSocket connections in large-scale voice applications. By centralizing the conversation logic and audio handling in its infrastructure, it allows me to scale thousands of simultaneous calls without worrying about server infrastructure or voice quality degradation. It benefits me by shortening the development time (Time-to-Market); what previously required months of tuning in voice activity detection (VAD) models, here is configured and deployed in days with production-level reliability. ### 21. Retell AI is the best lead qualification software out there **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Education Management **Reviewed Date:** May 17, 2026 **What do you like best about Retell AI?** - Ease of use - Super fast interface - The settings are just balanced enough: Not too basic for engineers not to complex for non-technical people **What do you dislike about Retell AI?** I would like to see more accents for English language, like Irish. I wasn't able to find that And also I need to be able to select multiple agents at once to move them into a folder, right now it's one by one and in all agents it doesn't show what folder they're already in too. Would be nice to set that up. **What problems is Retell AI solving and how is that benefiting you?** I need to qualify leads that are reaching out to my business to see how serious they are to take my business. Automating this step allows me to focus better on the leads that want to take the education consultancy service I'm offering. ### 22. Needed a solution, retell has it. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Program Development **Reviewed Date:** April 06, 2026 **What do you like best about Retell AI?** The voice quality is incredible — callers genuinely can't tell they're talking to an AI. Setup was fast, the knowledge base integration works well, and the webhook system lets us pipe call data straight into our app. For a one-man SaaS shop, having a 24/7 phone agent that handles both sales and support calls is a game changer. The dashboard makes it easy to tweak the agent's personality and monitor call quality. **What do you dislike about Retell AI?** SMS took me by surprise — I assumed it was already active on my number and just found out today it requires a separate A2P registration with a 2-week wait. Would be great if that was flagged during initial phone number setup. Also the pricing page could be clearer about what's included vs. what requires additional registration steps. **What problems is Retell AI solving and how is that benefiting you?** I'm a solo founder running a fleet management SaaS for small trucking companies. I can't be on the phone 24/7, but my customers expect to call a number and talk to someone. Retell lets me put a real phone number on my sales posters and website that actually answers, qualifies leads, answers product questions, and handles basic support — all while I'm dispatching trucks or writing code. Before Retell, missed calls were missed revenue. Now every call gets answered, and I get a webhook with the full transcript so I can follow up personally when it matters. ### 23. Excelent **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Telecommunications **Reviewed Date:** April 06, 2026 **What do you like best about Retell AI?** What I like most about Retell AI is how easy it is to build and deploy voice AI agents for real phone calls. The platform is very intuitive and allows quick integration with tools like Google Sheets and automation platforms, which makes it ideal for creating scalable outbound call solutions. The voice quality and real-time interaction are also very impressive. **What do you dislike about Retell AI?** One area for improvement is the learning curve when setting up more advanced workflows and integrations. Additionally, better documentation and more examples for complex use cases would be helpful. Occasionally, fine-tuning the conversation flow and handling edge cases can require extra effort. **What problems is Retell AI solving and how is that benefiting you?** Retell AI helps solve the problem of manual and repetitive outbound calling processes in contact centers. It automates customer interactions, reducing the need for human agents to handle routine calls. This benefits us by saving time, lowering operational costs, and increasing efficiency while ensuring consistent communication with customers. ### 24. RetellAi_perfect **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Architecture & Planning **Reviewed Date:** April 22, 2026 **What do you like best about Retell AI?** What I like most about Retell AI is the exceptionally low latency and the natural-sounding turn-taking. It handles interruptions smoothly, making the conversation feel much more human than other platforms. The API is well-documented and the integration with tools like n8n or Make.com is seamless, which allows for complex automation workflows **What do you dislike about Retell AI?** The ease of use and the quality of the pre-built voices are outstanding. I love how quickly I can go from a prompt to a functioning voice agent. The dashboard provides great observability into call logs, which helps a lot in refining the agent's behavior and performance over time. **What problems is Retell AI solving and how is that benefiting you?** I wish there were more advanced built-in tools for handling complex logic without always relying on external webhooks. Sometimes the customization of the 'back-and-forth' logic can feel a bit restricted when trying to implement very specific business rules or multi-step verification processes ### 25. This is the best platform I have ever used (after 25 years in the UCaaS, CCaaS, IVR space) **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services **Reviewed Date:** April 04, 2026 **What do you like best about Retell AI?** Fully featured voice platform without the bloat of years and years of legacy product development and bolt on feature through acquisition. I have used Twilio directly in the past and Retell add incalculable value that removes the need for hardcore development skills. Pared with VIBE coding platform I have built a feature rich and competitive set of solutions for the SMB market. **What do you dislike about Retell AI?** Nothing so far. It offers everything I need for my business at this time. Only area I am figuring out is how to access learning and certification materials that are direct from Retell and not vids/material from other builders. I think the Community approach is great, but years of legacy Enterprise development and support methodology have taught me a direct vendor model is requirement for building credible offerings in the larger market space. **What problems is Retell AI solving and how is that benefiting you?** AI Voice Portal solutions that offer truly customer friendly & intuitive customer service and engagement tools without legacy bloat and massively complex offers from big players ### 26. Best ai agent **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising **Reviewed Date:** April 03, 2026 **What do you like best about Retell AI?** Retell AI is one of the best AI voice agents I’ve used. It’s very easy to set up and use, and the voice interactions feel smooth and natural. I especially like how quickly you can deploy a working agent without needing complex technical knowledge. It makes building voice automation accessible and efficient. **What do you dislike about Retell AI?** One thing I’d love to see improved is deeper automation and integrations. For example, the ability to easily connect with CRMs or Excel/Google Sheets directly within the platform would make it much more powerful. Adding more built-in integrations for workflows and data syncing would significantly enhance its usefulness for business operations. **What problems is Retell AI solving and how is that benefiting you?** Retell AI helps solve the problem of handling high volumes of client communication without requiring extensive human labor. As someone who runs an agency, this is a huge benefit because it allows me to automate client interactions like calls, follow-ups, and basic support without needing to constantly hire or manage staff. It reduces operational costs, saves time, and improves efficiency, while still delivering a consistent experience for clients. This allows me to scale my services more easily and focus on higher-level business growth instead of repetitive tasks. ### 27. AI receptionist that actually works for a dental clinic **Rating:** 5.0/5.0 stars **Reviewed by:** Brandon K. | Product Manager, Customer Data Platform (CDP), Mid-Market (51-1000 emp.) **Reviewed Date:** April 03, 2026 **What do you like best about Retell AI?** What I like most is that Retell makes it relatively easy to build a voice agent that can actually take actions, not just talk. Features like function calling, knowledge base support, inbound and outbound calling, and post call analysis make it feel like a complete platform rather than just a voice layer. The low latency also helps conversations feel more responsive, which matters a lot for use cases like a dental clinic receptionist handling bookings and common patient questions. **What do you dislike about Retell AI?** The main downside is that even with the built in tooling, you still need to spend time tuning flows, prompts, and integrations to handle real world edge cases well. Knowledge base retrieval and function calling are useful, but they do not fully remove the work needed to make the agent reliable in more complex conversations. The platform has strong monitoring and QA features, but that also reflects the reality that production voice agents still need ongoing review and optimization after launch. **What problems is Retell AI solving and how is that benefiting you?** Retell AI helps solve missed calls and front desk overload for dental clinics, especially during peak hours and after hours. By using a low latency voice agent that can handle inbound calls, book appointments through function calling, and answer common patient questions using a knowledge base, it reduces the need for manual call handling. This improves clinic efficiency while also capturing more bookings that would otherwise be missed, which directly impacts revenue. It also gives better coverage without needing to hire additional staff, while still maintaining a responsive and natural call experience for patients. ### 28. One of the best agentic platforms. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Health, Wellness and Fitness **Reviewed Date:** March 29, 2026 **What do you like best about Retell AI?** What stands out most about Retell AI is how quickly you can go from idea to a fully functioning voice agent. The platform abstracts away a lot of the complexity around telephony, speech recognition, and LLM orchestration, which makes it incredibly powerful for building production-grade voice experiences. The real-time responsiveness and flexibility in designing conversational flows are especially impressive. It’s also great how configurable the system is—you can fine-tune prompts, manage variables, and integrate with external systems without needing a heavy infrastructure lift. Overall, it enables teams to move fast and iterate quickly, which is critical when building AI-driven experiences. **What do you dislike about Retell AI?** One area for improvement is the naturalness of conversations out of the box—agents can sometimes include filler words or sound slightly robotic without careful prompt tuning. This means you need to spend extra time refining prompts to get a truly polished, human-like experience. Additionally, debugging and observability could be stronger; when something goes wrong in a conversation flow, it’s not always immediately clear where the issue originated. Lastly, while the platform is powerful, some workflows (like handling edge cases or complex branching logic) can require workarounds that could be simplified with more native tooling. **What problems is Retell AI solving and how is that benefiting you?** Retell AI solves the complexity of building and deploying production-grade voice agents. Traditionally, creating a reliable voice experience requires stitching together telephony, speech-to-text, text-to-speech, and LLM orchestration—along with handling latency, interruptions, and real-time context. Retell abstracts all of that into a single platform. For us, this has been a massive accelerator. Instead of spending months on infrastructure, we can focus on designing high-quality patient interactions and workflows. It enables us to quickly launch voice agents for tasks like patient intake, appointment handling, and call routing, while continuously iterating based on real conversations. The benefit is faster time to market, lower engineering overhead, and the ability to deliver a more responsive, always-available experience for our users. ### 29. The backbone of our AI voice product — reliable, fast, and developer-friendly **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Hospital & Health Care **Reviewed Date:** March 26, 2026 **What do you like best about Retell AI?** We've been using Retell AI to power the voice agents for our AI receptionist product for medical clinics in Dubai. After evaluating several alternatives, Retell stood out for its low latency, natural-sounding conversations, and the flexibility it gives you in building complex agent flows. The dynamic variables feature is a game changer for us — it lets us run a single agent that serves multiple clinics, each with their own name, doctors, hours, and custom information injected at call time. The transfer call functionality works reliably, and the web call SDK made it easy to embed a live demo directly on our website. The prompt-based approach gives you full control over agent behaviour without needing to touch any underlying model code. The LLM swap feature is also useful — we've tested different models and can switch without rebuilding anything. Support has been responsive and the documentation is solid. The dashboard gives good visibility into call logs and agent performance. If you're building a voice AI product and need something production-ready, Retell is genuinely one of the best platforms out there right now. Highly recommend. **What do you dislike about Retell AI?** The main limitation we've run into is the lack of native support for UAE or Middle East phone numbers — we currently have to use US numbers and forward calls, which adds a small amount of friction for our clinic clients. A wider range of supported regions for phone number provisioning would make Retell a complete end-to-end solution. The analytics dashboard could also be more detailed — things like per-agent call breakdowns and language detection would save us from having to build those features ourselves. Minor issues overall given how strong the core product is. **What problems is Retell AI solving and how is that benefiting you?** We're building an AI voice receptionist product for medical clinics in Dubai. The core problem we needed to solve was getting an AI to handle real phone calls — answering, understanding natural speech, following complex booking flows, and transferring calls — all with low enough latency to feel like a real conversation. Retell solves all of that out of the box. Before finding Retell, we were looking at stitching together separate STT, LLM, and TTS providers ourselves, which would have taken months to get right. Retell gave us a production-ready voice layer in days. The biggest benefit for our business is speed to market. We were able to build, test, and deploy a fully working AI receptionist — complete with live calendar booking, dynamic clinic variables, multilingual support, and call transfers — in a fraction of the time it would have taken building from scratch. That's a direct business advantage when you're a solo founder trying to move fast. ### 30. Awesome platform! The low latency and realistic turn-taking completely change the feel of AI agents. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software **Reviewed Date:** March 25, 2026 **What do you like best about Retell AI?** The abstraction layer is fantastic for rapid prototyping. It handles the heavy lifting of telephony and WebSocket streaming out of the box, allowing developers to deploy functional voice agents much faster than configuring the underlying infrastructure from scratch. **What do you dislike about Retell AI?** The trade-off for that ease of use is a lack of granular control over the media routing and WebRTC pipeline. If you are building a highly customized, large-scale multi-agent SaaS, the restrictions on custom agent server architectures and the managed-service pricing model can become bottlenecks. **What problems is Retell AI solving and how is that benefiting you?** Building a scalable B2B voice AI platform requires managing complex orchestration between SIP trunks, WebRTC, Speech-to-Text, and the LLM. Retell AI completely abstracts this infrastructure nightmare. It solves the problem of high latency and unnatural conversational flow by handling barge-ins (interruptions) and turn-taking natively. The primary benefit is a drastically accelerated time-to-market. Instead of spending months building and debugging the underlying telecom pipeline for concurrent inbound and outbound calls, I can focus entirely on building custom agent logic and the core features of the SaaS application. ### 31. Amazing AI Agents **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Computer Software **Reviewed Date:** May 10, 2026 **What do you like best about Retell AI?** Quality and selection of voices, flawless integration with n8n, cal.com, twilio, gohighlevel, ergonomic interface which even in 2026 is rare - I insist is rare!, then it's also the analytics, billing, huge selection of LLMs. Overall an amazing platform **What do you dislike about Retell AI?** I'd love to be able to directly buy phone number for much more places in the world (Latam, Western and Eastern Europe, Asia, Africa, etc.) - the current offer is very limited and I do understand it's not the main business, but it will help a lot. Even N America there are 2 out of 23 countries were you can buy phone numbers... **What problems is Retell AI solving and how is that benefiting you?** helps me build voice AI Agents for my clients doing all sort of things inbound, outbound agents, call transfers, all sorts of agents, it's huge. ### 32. Fast. Simple. Powerful. The best part? It sounds human. If you’re building voice AI no-brainer. **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services **Reviewed Date:** March 24, 2026 **What do you like best about Retell AI?** Retell AI is honestly one of those tools that just works. Simple. Fast. Powerful. The best part? You don’t feel like you’re fighting the tech — it feels like the tech is working for you. If you’re building voice agents, doing inbound or outbound calls, or trying to automate real conversations… Retell makes it ridiculously smooth. Low latency. Natural voices. Clean setup. No nonsense. The truth is… most voice platforms overcomplicate things. Retell doesn’t. You plug it in. Connect your stack. And suddenly… your AI is actually talking like a human. If you’re serious about voice AI — this is not optional. It’s a weapon. very short Retell AI just works. Fast. Simple. Powerful. The best part? It sounds human. If you’re building voice AI — this is a no-brainer. **What do you dislike about Retell AI?** Nothing , Nada , it just work , maybe i was a bit confused about webhooks ect **What problems is Retell AI solving and how is that benefiting you?** Missed calls = lost money Businesses can’t answer every call — especially after hours. Retell fixes that by answering every single call, instantly ### 33. Perfect **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Accounting **Reviewed Date:** March 30, 2026 **What do you like best about Retell AI?** What I like best about Retell AI is its ability to create highly natural, human-like voice interactions in real time. The responsiveness and low latency make conversations feel smooth and engaging, which is critical for building truly effective voice applications. I also appreciate how flexible and developer-friendly it is, allowing seamless integration and customization for different use cases. Overall, it strikes a great balance between performance, realism, and ease of use, making it a powerful tool for modern conversational experiences **What do you dislike about Retell AI?** There’s very little to dislike about Retell AI, but like any platform, there’s always room for even more advanced customization as needs grow. **What problems is Retell AI solving and how is that benefiting you?** Retell AI solves the challenge of building fast, natural, and reliable voice-based interactions without complex infrastructure. This benefits me by saving development time, reducing costs, and allowing me to focus more on creating better user experiences instead of handling low-level voice and latency issues. ### 34. Best AI for telephone sales without a doubt! **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising **Reviewed Date:** March 25, 2026 **What do you like best about Retell AI?** I came into this quite sceptical - I had never really done anything more advanced in AI than using ChatGPT. I spent hours researching to make sure I was using the right system & that led me to Retell AI. Building the perfect agent is hard, but building an agent that works before getting more technical is actually way easier than I would of thought - I am moving more towards perfect everyday using the more advanced features - learning as I go. **What do you dislike about Retell AI?** My only gripe about Retell is that because I am UK based I would appreciate more UK accents when building an agent - hopefully these will come as the ecosystem grows. **What problems is Retell AI solving and how is that benefiting you?** I am still deep in the testing faze, but it has really opened my eyes as to what is possible - I don't think we are far from agents closing sales from start to finish. ### 35. Best Voice AI Agent **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Hospital & Health Care **Reviewed Date:** March 18, 2026 **What do you like best about Retell AI?** Retell makes it surprisingly easy to build and deploy voice agents quickly, especially for real-world use cases like reception, booking, and lead capture. The latency is solid, the voice quality feels natural, and the overall developer experience is clean. I also like how flexible it is with prompts and knowledge bases—it lets you iterate fast and get something production-ready without heavy engineering. **What do you dislike about Retell AI?** The biggest gap is around state management and structured flow control. A lot of critical behaviour (like handling contact preferences, not repeating questions, or remembering collected details) still relies too heavily on prompt engineering instead of built-in logic. This can make agents inconsistent at scale. Better native handling for forms, memory, and conversation state would significantly improve reliability. Also, debugging conversations and understanding why an agent made a decision could be clearer. **What problems is Retell AI solving and how is that benefiting you?** Retell AI is solving the problem of handling high-volume inbound calls without needing full-time staff, especially for use cases like reception, booking enquiries, and lead capture. It allows me to run a 24/7 AI receptionist that can qualify leads, collect structured information, and reduce missed opportunities after hours. This improves response time, captures more enquiries, and reduces operational load on the team. It also makes it possible to scale call handling without increasing headcount. ### 36. The best tool for creating voice agents with AI **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Information Technology and Services **Reviewed Date:** March 17, 2026 **What do you like best about Retell AI?** The ease of integration with telephony providers via SIP trunking, the natural quality of voices with ElevenLabs, and the ability to customize the agent with dynamic variables. The latency is very low and the conversations sound really natural. Additionally, the integration with n8n allows for the automation of complete customer acquisition and service flows. **What do you dislike about Retell AI?** The documentation for integrations with European telephony providers could be more detailed. The initial setup with Spanish numbers requires quite a bit of trial and error. It would also be helpful to have more examples of integration with automation tools like n8n. **What problems is Retell AI solving and how is that benefiting you?** Retell AI solves the problem of 24/7 customer service without the need for human staff. It allows the creation of voice agents that sound natural and can manage calls, schedule appointments, and qualify leads automatically. For my agency, it allows me to offer my SME clients an automated acquisition system that was previously only available to large companies. The main benefit is the saving of time and scalability — the same agent can handle a thousand calls simultaneously. ### 37. very useful platform for AI vocal agents **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Information Technology and Services **Reviewed Date:** March 15, 2026 **What do you like best about Retell AI?** The latency is incredibly low, which is the most critical factor for a natural-sounding voice agent. I love how easily it integrates with existing LLMs and the flexibility provided by the API for handling complex call flows and custom tools. **What do you dislike about Retell AI?** While the documentation is generally good, I’d like to see more advanced examples for handling edge cases in multi-turn conversations. Additionally, the cost per minute can scale quickly for high-volume outbound campaigns. **What problems is Retell AI solving and how is that benefiting you?** Retell AI eliminates the high latency and "robotic" delays that typically plague voice bots, allowing for natural, real-time conversations that feel truly human. By automating high-volume outbound and inbound calls with sub-800ms response times and intelligent interruption handling, it solves the challenge of scaling customer operations without increasing headcount or sacrificing lead quality. For me, this translates to significant cost savings, 24/7 availability for my customers, and perfectly structured data syncing directly to my CRM after every interaction. ### 38. Exceptional Low-Latency Voice AI for Building Conversational Sales Agents **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Consumer Services **Reviewed Date:** March 14, 2026 **What do you like best about Retell AI?** Retell AI provides incredibly realistic, low-latency conversational models that make deploying automated sales and lead follow-up agents seamless. The API is robust and integrates perfectly with complex backend workflows and custom automation setups. Setting up custom SIP trunks for routing calls is highly reliable, allowing for scalable deployment of outbound cart recovery agents and inbound qualification bots. The interruption handling and natural conversational pacing make the agents sound distinctly human, which is crucial for maintaining high engagement rates on cold or warm calls. **What do you dislike about Retell AI?** While the platform is incredibly powerful, the documentation for highly complex, edge-case SIP configurations or ultra-specific prompt tuning could be a bit more fleshed out. Additionally, scaling up massive concurrent batch calling campaigns requires careful budget monitoring, though the ROI from the recovered leads generally justifies the cost. **What problems is Retell AI solving and how is that benefiting you?** It completely automates the top of the sales funnel and customer follow-up. Instead of relying on manual dialers to chase down leads or abandoned carts, voice AI agents handle immediate outreach, answer initial FAQs, and qualify prospects in real-time. This ensures zero drop-off, handles scale effortlessly, and successfully books high-intent appointments directly onto the calendar without human intervention. ### 39. I am completely configuring ALL my agents with claude code. **Rating:** 4.0/5.0 stars **Reviewed by:** Denis L. **Reviewed Date:** April 15, 2026 **What do you like best about Retell AI?** Retell AI makes it incredibly easy to connect AI voice agents to real phone numbers. The SIP trunking integration with Twilio works seamlessly, and the dashboard makes it simple to assign agents to inbound numbers. The agent builder and prompt configuration are intuitive, and the call quality is excellent. **What do you dislike about Retell AI?** The initial setup of custom telephony via SIP trunking can be confusing, especially for first-time users connecting Twilio numbers. Better step-by-step documentation for the Twilio integration would help. Also, the dashboard occasionally has UI loading issues when navigating between sections. **What problems is Retell AI solving and how is that benefiting you?** Retell AI helps me automate inbound calls for my AI service agency, The Agent Factory. It handles client inquiries, answers questions about our Claude Academy training program, and books discovery calls via Cal.com — replacing the need for a human receptionist and enabling 24/7 availability. ### 40. Easy to use, reliable **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Human Resources **Reviewed Date:** March 13, 2026 **What do you like best about Retell AI?** Retell AI is very fast so there are no long silences during a call. It feels like a real person because it stops talking right away if the customer interrupts. You can connect it to your other tools easily with their clear instructions. The system is very strong and does not crash when many people call at the same time. This makes it perfect for local businesses that cannot afford to miss a single lead. **What do you dislike about Retell AI?** The pricing is hard to understand because you have to pay different fees for the phone line and the AI. It is difficult for a normal person to set up because you need to know how to code to make it work well. If you have a problem, it can take a long time to get an answer from their support team. You also have to pay the full price even when you are just testing the system to see if it works. **What problems is Retell AI solving and how is that benefiting you?** Retell AI stops you from losing money when you cannot answer the phone. It answers every call immediately so your customers do not go to a competitor. This helps you prove that your service works during a 7-day pilot. It also saves you time by taking notes and filling out your calendar automatically. ### 41. its an amazing product, good job retell team **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Construction **Reviewed Date:** March 13, 2026 **What do you like best about Retell AI?** Incredible Realism and Low Latency: The sub-second response times make conversations feel incredibly natural. The voices avoid those awkward robotic pauses, and the system handles "barge-ins" beautifully—meaning if a caller interrupts mid-sentence, the agent gracefully stops and listens just like a real human would. Developer-Focused Flexibility: It doesn't box you in with rigid constraints. You get the raw building blocks—like webhooks, custom LLM integrations, and robust APIs—giving you complete freedom to design exactly how the agent behaves and seamlessly tie it into custom backends. Production-Ready Reliability: It is built to scale effortlessly. Knowing the infrastructure can handle high-volume concurrent calls while providing built-in compliance (HIPAA, SOC 2, GDPR) and detailed post-call analytics takes a massive load off the engineering and deployment process. **What do you dislike about Retell AI?** The Rewarding Learning Curve: Because it is so robust and developer-centric, it skips the simplistic no-code visual builders. You really have to roll up your sleeves and write code to unlock its full potential. While it takes a bit more time to map out complex, multi-language flows, the exciting trade-off is that you get absolute, fine-grained control over the final product! Modular Pricing Structure: The billing is layered, meaning you pay for the base minutes plus the specific LLM, speech-to-text, and voice engines you choose to plug in. While it makes forecasting exact monthly costs a bit of a mathematical puzzle at first, it is actually a huge plus because it ensures you are only ever paying for the exact, top-tier components you want to use. **What problems is Retell AI solving and how is that benefiting you?** Building a voice AI from scratch is notoriously difficult because you have to string together several complex systems—Speech-to-Text (ASR), the "brain" (LLM), and Text-to-Speech (TTS)—while dealing with the messy reality of live audio. Retell AI steps in to solve these heavy-lifting infrastructure problems: The Latency Problem: In a traditional, pieced-together API chain, processing audio to text, generating an AI response, and converting it back to audio takes several seconds. Retell optimizes this entire pipeline to achieve sub-second latency, eliminating the awkward silences that ruin the illusion of a real conversation. The "Turn-Taking" Problem: Humans interrupt each other, use filler words, and pause to think. Retell AI handles "barge-ins" natively. It knows exactly when to endpoint (stop listening and start generating) and instantly stops talking if a user interrupts, rather than stubbornly talking over them. The Orchestration Problem: Instead of forcing developers to manually manage raw audio WebSockets, telephony SIP trunks, and three different AI provider APIs simultaneously, it wraps the entire complex voice orchestration stack into a single, unified platform. How That Benefits Me Honestly, it completely changes the game for development. By offloading the raw infrastructure and audio processing to Retell, here is how it directly benefits my workflow: Laser Focus on Apex's Brain: I don't have to waste weeks writing boilerplate code just to handle audio streaming or secure telephony connections. Instead, I get to spend 100% of my time fine-tuning Apex's actual intelligence, prompt engineering, and custom backend logic to make the agent exceptionally smart. A Truly Natural Product: Because Retell solves the latency and interruption issues so elegantly out-of-the-box, I can confidently put Apex in front of users knowing the interaction will feel fluid, professional, and remarkably human, rather than like a clunky robot. Rapid Prototyping to Production: It allows me to take complex voice flows from a local test environment straight to a highly reliable, production-ready state in a fraction of the time. It turns what used to be a massive engineering headache into a smooth, highly scalable process! ### 42. Outstanding AI Call Automation Platform **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Food Production **Reviewed Date:** March 13, 2026 **What do you like best about Retell AI?** What impressed us most about Retell AI is how natural the voice conversations feel. Compared to other voice AI tools we tested, the latency is very low and the interactions feel surprisingly smooth. The API is flexible and makes it possible to integrate AI calling into existing systems without too much complexity. It’s a powerful platform if you want to automate phone interactions while still maintaining a professional customer experience. **What do you dislike about Retell AI?** The platform is very powerful, but because of that it can take a little time to understand all configuration options when you first start. Some additional examples and ready-made templates for common use cases would help new users get started faster. That said, once everything is set up, the system works reliably. **What problems is Retell AI solving and how is that benefiting you?** Handling incoming calls manually can quickly become a bottleneck, especially during busy periods. Retell AI helps us automate routine phone interactions so that customers still receive immediate responses without needing a human agent for every call. This reduces operational workload and ensures calls are handled consistently, even outside business hours. As a result, our team can focus on more complex customer requests instead of repetitive phone tasks. ### 43. Retell is a strong platform, very effective and not too easy but clearly enough to develop projects **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Health, Wellness and Fitness **Reviewed Date:** May 14, 2026 **What do you like best about Retell AI?** I really like the many agents it has, with different voices, and all the monitor functions it has to provide enough information to the customer about how the system is working. **What do you dislike about Retell AI?** It is probably because I was in a rush that it wasn't as immediately easy as I´d like to understand all the different tabs. In reality, I don't have anything that dislike me from Retell. **What problems is Retell AI solving and how is that benefiting you?** Retell has helped me provide a voice agent for different businesses that don't want to rely on a human receptionist. It's given me the opportunity to create this automation project with an AI agent to answer phone calls, schedule meetings or appointments, and provide information while the professional is busy with other activities. ### 44. Finally, a simplified voice AI platform that actually works in production **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising **Reviewed Date:** March 12, 2026 **What do you like best about Retell AI?** The reliability in production. We build outbound voice AI agents for clients and Retell is the first platform we've trusted enough to put in front of real leads at scale. Calls handle interruptions naturally, recover from unexpected responses without breaking, and the post-call analysis returns structured data (booked status, objections, extracted variables) that hits the CRM automatically via webhook. The ElevenLabs voice integration is seamless and the whole stack, from LLM config to live calls, took less than a day to deploy. **What do you dislike about Retell AI?** The documentation could go deeper on edge cases and the dashboard analytics could be more prominent. Call performance data is there but you have to dig for it. Neither is a big deal, just areas with room to grow. **What problems is Retell AI solving and how is that benefiting you?** Retell lets us deploy outbound voice agents that reactivate leads and book meetings automatically, removing the need for manual follow-up and giving our clients a direct revenue return without adding headcount. ### 45. Easy to set up **Rating:** 4.5/5.0 stars **Reviewed by:** Verified User in Computer Hardware **Reviewed Date:** March 12, 2026 **What do you like best about Retell AI?** What I like most about Retell AI is its flexibility for building serious voice agents beyond simple prompt-based bots. The platform gives good control over call behavior, speech settings, custom LLM integrations, and structured conversation flows. I also like that it supports advanced use cases like multilingual assistants, external tools, and custom backend logic, which makes it useful for real production scenarios rather than only demos. The interface is modern, testing is convenient, and it is clear that the product is built for developers and teams who want more control over the voice stack. **What do you dislike about Retell AI?** The biggest downside is that setup can become confusing once you move beyond the basic use case. Some configuration areas, especially around custom LLMs, voices, transcription, and function/tool behavior, are not always intuitive, and it can take time to understand how everything fits together. There is a noticeable learning curve for advanced integrations, and debugging complex voice flows or backend-connected agents can be harder than it should be. I would also like clearer documentation and more step-by-step guidance for production-style setups, especially when combining multilingual transcription, custom backends, and external voice providers. **What problems is Retell AI solving and how is that benefiting you?** Retell AI solves the problem of turning voice AI ideas into something that can actually be tested and deployed in real phone-call scenarios. Instead of building the entire telephony, speech, and voice orchestration stack from scratch, I can focus on my backend logic, business workflows, and conversation design. That saves development time and makes it much easier to test live call experiences, multilingual voice interactions, and structured call flows. It benefits me by speeding up prototyping, reducing infrastructure complexity, and giving me a practical environment to connect voice agents with my own backend systems. ### 46. The Best Low-Latency Voice AI Platform for Developers **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Accounting **Reviewed Date:** April 19, 2026 **What do you like best about Retell AI?** I’ve been using Retell AI to build voice agents, and the experience has been phenomenal. The 600ms latency makes conversations feel incredibly natural. The API is very well-documented, making it easy to integrate with CRMs and other tools. It’s a game-changer for anyone looking to automate phone calls with high quality and reliability. **What do you dislike about Retell AI?** While Retell AI has the best latency in the market, the pricing model is a bit steep for small startups. Also, the initial setup and prompt engineering require a steep learning curve. I wish there were more pre-built templates for common use cases to make the onboarding process faster. **What problems is Retell AI solving and how is that benefiting you?** Traditional AI voice systems often have delays of 1.5 seconds or more, making conversation feel stilted. Retell AI achieves industry-leading low latency (~600–800ms), which mimics natural human response times. ### 47. What problems does Retell AI solve **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Real Estate **Reviewed Date:** March 11, 2026 **What do you like best about Retell AI?** What I like most about Retell AI is how easy it is to build production-ready voice AI agents that can handle real phone calls. **What do you dislike about Retell AI?** One area that could improve is providing more built-in templates and guided setup for common business use cases like real estate, healthcare, and customer support. While the platform is powerful, new users may need some time to understand the best way to structure prompts, call flows, and webhook integrations. It would also be helpful to have more native integrations with popular CRMs and automation tools. Currently these integrations are possible through webhooks, which works well, but direct integrations could make onboarding even easier for non-technical users. Overall these are minor improvements and the platform is already very capable for building voice AI solutions. **What problems is Retell AI solving and how is that benefiting you?** Retell AI is helping automate inbound and outbound phone conversations for businesses. Instead of missing calls or manually handling every inquiry, we can deploy AI voice agents that answer calls instantly, qualify potential customers, and capture lead information automatically. This benefits our workflow because every call can be processed, summarized, ### 48. Most Human World Talker **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Marketing and Advertising **Reviewed Date:** April 30, 2026 **What do you like best about Retell AI?** Retell lets you create any voice agent you can imagine, powering it up with super powers, using MCP tools and functions. The response time and the top tier quality of the voice is something that will keep blowing people's minds every single time they interact with one of these agents. **What do you dislike about Retell AI?** Nothing. I am thrived to see how this company scales in the long run. It will definetely impact the whole world, and we are starting to see its true power. **What problems is Retell AI solving and how is that benefiting you?** Retell agent handbook is one of the best improvements they've made so far. I do not need to think the best possible prompts to add to my ai agent because they are already built for me. Retell just keeps making this game easier to play. ### 49. Great experience building AI voice agents quickly and efficiently **Rating:** 4.0/5.0 stars **Reviewed by:** Verified User in Market Research **Reviewed Date:** April 18, 2026 **What do you like best about Retell AI?** “I really like the flexibility Retell AI offers. It’s easy to customize voice agents, integrate APIs, and quickly iterate on call flows without a lot of overhead. **What do you dislike about Retell AI?** One thing I found a bit challenging is adding phone numbers via SIP trunking. The setup process feels more complex than it should be, especially compared to platforms like Vapi where it’s much more straightforward. It would be great if this part was simplified to make onboarding easier. **What problems is Retell AI solving and how is that benefiting you?** Retell AI solves the challenge of building and deploying AI-powered voice agents for business use cases without requiring heavy infrastructure. It allows me to quickly create, test, and iterate on automated call workflows, which saves time and reduces development effort. This makes it easier to validate ideas, improve customer interactions, and scale voice automation more efficiently. ### 50. The best and simplest out there **Rating:** 5.0/5.0 stars **Reviewed by:** Verified User in Construction **Reviewed Date:** March 20, 2026 **What do you like best about Retell AI?** I was looking for a quick and easy way to make a prototype for C-level executives and Retell AI was the best out there. Easy to use, professional, and exceptional. **What do you dislike about Retell AI?** No connection with WhatsApp and limited language support. **What problems is Retell AI solving and how is that benefiting you?** Retell AI eliminates the gap between conversational AI capabilities and real-world phone call deployment. It provides a ready-to-use infrastructure for building, deploying, and scaling AI voice agents — without requiring deep engineering resources. The main benefits: Speed — a functional voice agent can be live in days, not months Simplicity — conversation flows, LLM configuration, and phone number management in one platform Reliability — handles telephony, latency, and interruption detection out of the box Flexibility — connects to external systems via webhooks, enabling real business logic behind every call For companies running high-volume contact centers, it turns what was a 12-month engineering project into a weeks-long deployment - [View Retell AI pricing details and edition comparison](https://www.g2.com/products/retell-ai/reviews?section=pricing&secure%5Bexpires_at%5D=2026-05-18+12%3A35%3A57+-0500&secure%5Bsession_id%5D=e0dee8ab-9a61-4b08-8de4-252cf6afc439&secure%5Btoken%5D=c8e9b6d13154806e7b03ecabb8fd2b7458afd90f588c111182fe04a0121af4d4&format=llm_user) ## Retell AI Integrations - [Agentforce Sales (formerly Salesforce Sales Cloud)](https://www.g2.com/products/agentforce-sales-formerly-salesforce-sales-cloud/reviews) - [Asterisk](https://www.g2.com/products/asterisk/reviews) - [AWS Lambda](https://www.g2.com/products/aws-lambda/reviews) - [Azure Functions](https://www.g2.com/products/azure-functions/reviews) - [Boost.space](https://www.g2.com/products/boost-space/reviews) - [Bubble](https://www.g2.com/products/bubble/reviews) - [Calendly](https://www.g2.com/products/calendly/reviews) - [Claude](https://www.g2.com/products/anthropic-claude/reviews) - [Close](https://www.g2.com/products/close/reviews) - [CloudTalk](https://www.g2.com/products/cloudtalk/reviews) - [ElevenLabs](https://www.g2.com/products/elevenlabsio/reviews) - [Five9 Intelligent Cloud Contact Center Platform](https://www.g2.com/products/five9-intelligent-cloud-contact-center-platform/reviews) - [Genesys](https://www.g2.com/products/vitech-corporation-genesys/reviews) - [GHL](https://www.g2.com/products/ghl/reviews) - [Google Sheets for Confluence - Workspace Connector](https://www.g2.com/products/google-sheets-for-confluence-workspace-connector/reviews) - [Google Workspace](https://www.g2.com/products/google-workspace/reviews) - [HubSpot Sales Hub](https://www.g2.com/products/hubspot-sales-hub/reviews) - [LIVEBOX](https://www.g2.com/products/livebox/reviews) - [Make](https://www.g2.com/products/integromat-by-celonis-make/reviews) - [Modal](https://www.g2.com/products/modal/reviews) - [n8n](https://www.g2.com/products/n8n/reviews) - [OpenAI Whisper](https://www.g2.com/products/openai-whisper/reviews) - [Pipedream](https://www.g2.com/products/pipedream/reviews) - [RESTful JSON API](https://www.g2.com/products/restful-json-api/reviews) - [Salesforce CRM Dashboards](https://www.g2.com/products/salesforce-crm-dashboards/reviews) - [Twilio](https://www.g2.com/products/twilio/reviews) - [VICIdial](https://www.g2.com/products/vicidial/reviews) - [WhatsApp Business Platform](https://www.g2.com/products/whatsapp-business-platform/reviews) - [Zapier](https://www.g2.com/products/zapier/reviews) ## Retell AI Features **Lead Facilitation** - Customer-facing Chatbot - Lead Qualification - Lead Follow-up - Meeting Scheduling **Responses** - Personalization - Route To Human - Natural Language Understanding (NLU) **Automation - AI Agents** - Sales Follow-Up - Customer Interaction Automation - Lead Generation - Document Processing - Feedback Collection **Customization - AI Agent Builders** - Natural Language Configuration - Tone Customization - Security Guardrails **Voice Recognition - AI Voice Assistants** - Voice Recognition **Organization** - Opportunity and Pipeline Management - Data Entry - Integrations / APIs **Platform** - Conversation Editor - Integration - Human-In-The-Loop **Autonomy - AI Agents** - Independent Decision Making - Adaptive Responses - Task Execution - Problem Solving **Functionality - AI Agent Builders** - Omni-channel Support - Agent Branding - Proactive Response Capabilities - Seamless Human Escalation **Speech Synthesis - AI Voice Assistants** - Speech Synthesis - Customizable speech - Multiple voice actions **Performance Analysis** - Coaching - Peformance Tracking **Generative AI** - AI Text Generation - AI Text Summarization **Data and Analytics - AI Agent Builders** - Analytics & Reporting - Contextual Awareness - Data Privacy Compliance **Customer Query Resolution - AI Customer Support Agents** - Automated Ticket Resolution - Contextual Response Generation - Sentiment Analysis - Knowledge Base Utilization - Multilingual Support **Security and privacy - AI Voice Assistants** - Encrypted communication **Agentic AI - AI Agents** - Autonomous Task Execution - Multi-step Planning - Cross-system Integration - Adaptive Learning - Natural Language Interaction - Proactive Assistance - Decision Making **Sales Analysis** - ROI Forecasting - Sales Forecasting **Integration - AI Agent Builders** - Workflow Automation - API Usage - Platform Interoperability - CRM Data Integration **Customer Interaction Automation - AI Customer Support Agents** - Proactive Customer Outreach - Feedback Collection - Escalation Handling - Workflow Optimization **Compatibility - AI Voice Assistants** - Cross platform compatibility **Generative AI** - AI Text Generation - AI Text Summarization **Agentic AI - AI Sales Assistant** - Autonomous Task Execution - Multi-step Planning - Cross-system Integration - Adaptive Learning - Natural Language Interaction - Proactive Assistance - Decision Making **Automation** - Customer Interaction Automation - Feedback Collection - Document Processing **Autonomy** - Independent Decision Making - Adaptive Responses - Task Execution - Problem Solving ## Top Retell AI Alternatives - [ElevenLabs](https://www.g2.com/products/elevenlabsio/reviews) - 4.5/5.0 (1,129 reviews) - [Synthflow](https://www.g2.com/products/synthflow/reviews) - 4.5/5.0 (1,009 reviews) - [Fin](https://www.g2.com/products/fin/reviews) - 4.5/5.0 (3,688 reviews)