Retell AI Reviews & Product Details

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.

Product Website

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Retell AI

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Retell AI Community

Languages Supported

Bulgarian, Catalan, Danish, German, Greek, English, Finnish, French, Hindi, Hungarian, Indonesian, Italian, Japanese, Korean, Malay, Dutch, Norwegian, Polish, Portuguese, Romanian, Russian, Slovak, Spanish, Swedish, Thai, Turkish, Vietnamese, Chinese (Simplified)

Overview by

Bing Wu

Pricing

Pricing provided by Retell AI.

Pay as you go

$0.07

1 Minute

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Retell AI AI Agent Performance

Explore real-world performance insights that show how Retell AI's agentic features compare to AI agents with similar capabilities.

Overall

-2 below category avg

Pros

Cons

62 Safety Score

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Retell AI Media

Retell AI Demo - Agent Building Overview

Quickly build, customize, and refine Al voice agents for call center operations with LLM-native technology.

Simulate, monitor, and refine Al voice agents before full deployment.

Connect your agent to your telephony, website, and multiple channels with ease.

Retell AI Demo - Monitoring the Agent's Performance

Track, analyze, and improve your Al agent using real-time metrics and intelligent recommendations.

Retell AI Demo - Ecosystem & Integrations

Seamlessly integrate into your tech stack

Interactive Demo

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Retell AI Reviews (783)

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Qazi Y.

AI Engineer

Small-Business (50 or fewer emp.)

1/7/2026

"Powering Our Restaurant POS with Voice AI built using Retell"

5/5

What do you like best about Retell AI?

The docs are easy to read and fairly easy to follow. I also like their transparency when it comes to pricing. On top of that, Retell is highly flexible and customizable, making it a great fit for my use case. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

So far, I’ve had a positive experience. However, there was one occasion when I emailed to ask about custom STT integration and didn’t receive a response. Review collected by and hosted on G2.com.

Muhammad w.

12/3/2025

"Frustrating Custom Function Issues, Otherwise Solid"

5/5

What do you like best about Retell AI?

Everything about Retell AI is good. I find the overall features and functionality to be satisfactory and efficient in my work. There is no specific feature that is unnecessary to single out because the general performance of Retell AI seems to meet my needs. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

I am extremely frustrated with Retell AI because of the issue with saving custom function names. Despite my persistent and time-consuming efforts, I have been unable to save the names, which is incredibly irritating. It has severely affected my patience and made progress difficult, especially considering I rely on custom functions for my work with AI agents for clients. This problem is so disruptive that it makes me reconsider recommending the product, as it is a major source of frustration and inefficiency in my workflow. Review collected by and hosted on G2.com.

Response from Evie Wang of Retell AI

edit

Hey Muhammad, thank you so much for taking the time to share this feedback. We’re really sorry for the frustration caused by the custom function naming issue.

Our team has since released a fix for the error message and saving flow. When you have a moment, could you try it again and let us know if everything works smoothly on your end? We truly appreciate you helping us improve.

Verified User in Computer Software

Small-Business (50 or fewer emp.)

1/11/2026

"Streamlines Orders with Ease, Needs Better Integrations"

4/5

What do you like best about Retell AI?

I really appreciate Retell AI for its efficient intelligence and realism in understanding the training prompt. I also enjoy being able to perform automations similar to n8n directly on Retell AI rather than relying on external platforms. The speed and ease of use of Retell AI make it a great choice, to the point that we switched from vapi to Retell AI for these reasons. Moreover, the setup process is straightforward with documentation that's simple and easy to understand, especially when implementing complex operations. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

Retell AI should provide integrations like Gmail, Google Sheets, Go High Level, and HubSpot. Review collected by and hosted on G2.com.

Verified User in Food Production

10/31/2025

"Efficient AI Calling Solution"

5/5

What do you like best about Retell AI?

What I like best about Retell AI is how natural and human-like the voice sounds during calls. The agent responds dynamically, handles interruptions smoothly, and maintains a real conversation — not just a scripted dialogue. The setup is simple, the interface is clean, and I can build call flows without any technical complexity. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

What I dislike is that sometimes the AI pauses a bit too long before responding, especially in fast-paced conversations. Also, more customization for voice tone and emotions would make the experience even better. Review collected by and hosted on G2.com.

What problems is Retell AI solving and how is that benefiting you?

Retell AI solves the problem of manually making repetitive calls. Instead of spending hours dialing, leaving voicemails, and repeating the same introduction over and over, the AI handles those conversations for me. It allows me to automate initial outreach, qualify leads, and collect key information before I even talk to the customer. This saves me a huge amount of time and lets me focus only on serious prospects who are ready to move forward — increasing productivity and reducing workload. Review collected by and hosted on G2.com.

Ashish G.

Senior Manager - Key Accounts

Mid-Market (51-1000 emp.)

10/30/2025

"Great platform - sounds so natural"

5/5

What do you like best about Retell AI?

The platform is incredibly intuitive to use, even for someone without a technical background like me. I was able to set up and deploy AI voice agents without needing to write code or constantly bug our developers. The voice quality is natural and the conversations flow smoothly, which is crucial for our customer interactions. Plus, their documentation is clear and their support team has been responsive whenever I've run into questions. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

Sometimes the platform can feel a bit limited when you want to do more complex customizations beyond the standard workflows. There have been occasional latency issues during peak hours that affect call quality. Also, the pricing structure could be more transparent - it's not always clear how costs will scale as usage increases, which makes budgeting a bit tricky. Review collected by and hosted on G2.com.

What problems is Retell AI solving and how is that benefiting you?

Retell AI is helping us handle customer calls at scale without needing to hire and train a large call center team. Before, we were either missing calls or spending way too much on human agents for routine queries. Now, the AI handles initial inquiries, appointment bookings, and common questions 24/7, which means our customers get instant responses even outside business hours.

The biggest benefit for me is that I can focus our team on higher-value work instead of repetitive call handling. It's also helped us maintain consistency in how we communicate with customers - the AI follows our scripts perfectly every time, which improves the overall customer experience. Plus, I can track and analyze all conversations to understand what our customers actually need, which informs our marketing and product decisions. Review collected by and hosted on G2.com.

Sebastian M.

Director IT

Small-Business (50 or fewer emp.)

8/13/2025

"The ultimate tool for AI voice assistants"

5/5

What do you like best about Retell AI?

Retell AI has completely transformed the way we manage automated calls, with impressive voice quality and understanding. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

What I like the most is its ability to create natural voice assistants that understand context and respond like a real human. The integration with APIs and external systems is simple and powerful, and the control panel is intuitive, allowing us to implement changes and improvements in minutes. Additionally, the technical support is fast, approachable, and effective, which makes a big difference. Review collected by and hosted on G2.com.

What problems is Retell AI solving and how is that benefiting you?

Retell AI has allowed us to automate service and sales calls that previously required a large amount of staff, reducing costs and response times. Now we can serve customers 24/7, with a level of personalization and naturalness that enhances the user experience and increases the conversion rate. Additionally, the integration with our internal tools allows us to connect real-time data, streamline processes, and obtain precise metrics to optimize each interaction. Review collected by and hosted on G2.com.

Jonathan M.

Founder

Small-Business (50 or fewer emp.)

8/13/2025

"Really effective and easy-to-use voice AI"

5/5

What do you like best about Retell AI?

It's very easy to get started and intuitive. It integrates very easily to Bubble.io and Make.com. You can import numbers from Twilio easily. Their documentation is comprehensive, and the tutorial videos they curate are very useful. The voices and call options are extensive - I love being able to create custom functions for use in a call, and that you can refer to these in the call (this is why I moved away from Synthflow - I wasn't able to detect when a function was running). I appreciate the 'Next invoice' amount being shown, and their general transparency with how much things cost. My clients have been very impressed with the voices. Their 'Single Prompt' agent is powerful enough for pretty tricky conversations, and the 'Flow' canvas allows for very deep conversations. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

Having a 'Test custom function' in the backend could be useful, so you wouldn't have to make an actual call or test the bot. Otherwise not much. Review collected by and hosted on G2.com.

What problems is Retell AI solving and how is that benefiting you?

It allowed me to run a voice-based survey for a Business Chambers client - moving their (boring) survey from web to voice saw deeper engagement and answers.

Several clients are interested in using it to qualify leads. But the UK's GDPR and other regulations mean you need already active consent to receive 'automated calls' from every prospect to use AI voice calls Review collected by and hosted on G2.com.

W L.

Marketing Consultant

Small-Business (50 or fewer emp.)

8/11/2025

"Powerful AI Voice Platform with Fast Updates and Excellent Support"

5/5

What do you like best about Retell AI?

Retell AI combines ease of use with powerful capabilities. Implementation was straightforward, and the integration with tools like Twilio works flawlessly. We value the large selection of LLMs and voice providers, including high-quality options like ElevenLabs, which give us flexibility to match different use cases. The platform is updated frequently, with new features and improvements that clearly respond to market needs. Customer support is exceptional – quick, knowledgeable, and genuinely committed to helping us succeed. It’s a reliable, scalable solution that we use regularly and trust for our business. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

No major downsides. Occasionally, I wish new features came with more example use cases right away, but the team is quick to add helpful resources. Review collected by and hosted on G2.com.

What problems is Retell AI solving and how is that benefiting you?

Retell AI allows us to handle customer calls in a highly automated yet natural way, freeing up staff time for more complex tasks. The flexibility to choose from multiple LLMs and voice providers lets us tailor the bot’s performance and voice quality to each use case. Seamless Twilio integration means we can deploy quickly without complex infrastructure work. Frequent updates keep us ahead with new capabilities that match market demands, so our service remains competitive and scalable. Overall, it improves efficiency, enhances customer experience, and reduces operational costs. Review collected by and hosted on G2.com.

Tom I.

Owner

Small-Business (50 or fewer emp.)

8/11/2025

"Great Service, Product and Price"

5/5

What do you like best about Retell AI?

I’ve been using Retell AI and couldn’t be happier with the experience. The product works exactly as promised — it’s reliable, easy to use, and has made a big difference in my business. Their pricing is very fair for the value you get, and the customer service is outstanding. Every interaction I’ve had has been professional, friendly, and quick to resolve any questions. Highly recommend Retell AI to anyone looking for a great combination of product, price, and service. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

Sofar there is nothing I dislike about Retell Ai. Review collected by and hosted on G2.com.

What problems is Retell AI solving and how is that benefiting you?

Retell AI has completely transformed how I handle outbound calls. In the insurance business, I need to reach a large number of prospects quickly and consistently — something that used to take hours of manual dialing. Now, Retell AI does the heavy lifting, bulk calling hundreds of numbers while maintaining a professional and natural-sounding conversation. This not only saves me time but also increases my reach and productivity, allowing me to focus on closing more sales. The product is solid, the pricing is fair, and their service team is always responsive and helpful. Highly recommend! Review collected by and hosted on G2.com.

Melanie R.

10/25/2025

"Highly Customizable, Perfect for Business Automation"

5/5

What do you like best about Retell AI?

I appreciate the customizable nature of Retell AI, which allows me to tailor the platform to suit my specific needs. It's incredibly convenient that there's an option to select a phone number and even get a verified phone number, which boosts the legitimacy of my business. The automation capabilities of Retell AI are invaluable to me in developing a call agent. The service ensures that calls are answered and the individuals handling them are knowledgeable, which helps businesses avoid missed opportunities. Additionally, the overall experience of using Retell AI has been excellent, as reflected in my perfect recommendation score of 10 out of 10. It's been a pleasure to use something so efficient, making it easy to recommend to others. Review collected by and hosted on G2.com.

What do you dislike about Retell AI?

I needed a little guidance in the beginning to understand where all the nuances are and what each section needs to be set up properly. Additionally, I think the software should provide tutorials within the application. I didn't see any tutorials available unless I missed them. Review collected by and hosted on G2.com.