Retell AI Reviews & Product Details

What I like best about Retell AI is how practical and effective it is for real business use cases. We use it ourselves, and we have also implemented it for multiple clients, including in the publication and healthcare industries. The voice AI quality, automation capabilities, and flexibility make it easy to create useful AI calling and customer interaction workflows. Our clients have been happy because it saves time, reduces manual work, and improves response efficiency. Review collected by and hosted on G2.com.

There is not much to dislike overall. Some advanced use cases can take a little time to configure properly, especially when the workflow is complex or needs custom integration with existing systems. But once the setup is done correctly, it works very well and delivers good results. But we used MCP for doing the same using Codex. Review collected by and hosted on G2.com.

This app is life saver for any company that is doing repetitive phone calls. Retell can complete lead qualification calls like a human, never has mood swings and gets the answers 99% right all the time. Seriously nobody likes to do 100 calls where the same questions over again to qualify leads, if you haven't switched to Retell yet, the best time is today. Setting it up is only a days work. By doing this you save a ton of time and call more customers. Review collected by and hosted on G2.com.

Would be great if I could get the international phone numbers directly from retell, it's a hassle dealing with Twilio or it should direct me to trusted alternatives where I can get the phone numbers. Review collected by and hosted on G2.com.

Retell AI makes it incredibly easy to build and deploy conversational voice agents. The function calling system integrates seamlessly with external tools like n8n and Airtable, allowing complex workflows such as appointment booking, caller identification, and lead management to work in real time during calls. The test interface directly in the browser is a great time saver. Review collected by and hosted on G2.com.

he documentation for connecting third-party phone providers via SIP trunking could be more detailed, especially for beginners. Some advanced configuration steps require prior knowledge of SIP protocols. A more guided setup wizard for Twilio integration would be a great improvement. Review collected by and hosted on G2.com.

What we like most about Retell AI is the speed of implementation and the flexibility to build enterprise-grade AI voice agents. The platform makes it easy to create scalable customer service, collections, roadside assistance, and operational workflows with low latency and natural conversations. We also value the API-first approach and how easily it integrates into existing business systems and omnichannel environments Review collected by and hosted on G2.com.

One area that could improve is the onboarding documentation for more advanced enterprise use cases. As we scale more complex AI operational workflows, having additional examples for large-scale integrations, analytics, monitoring, and multi-channel orchestration would make adoption even faster for enterprise teams Review collected by and hosted on G2.com.

What I like best about Retell AI is how fast and flexible it is for building real-time voice AI agents. The call quality, latency, and conversational flow are impressive compared to many other platforms I tested. I also like how easy it is to integrate with automation tools like n8n, GoHighLevel, and OpenAI to create appointment booking and customer support systems. Review collected by and hosted on G2.com.

One thing I dislike is that advanced workflows and prompt tuning can still require a lot of testing and experimentation, especially for production-ready voice agents. The pricing can also become expensive when scaling or doing many test calls during development. More beginner-friendly templates and debugging tools would also help new users. Review collected by and hosted on G2.com.

Unbelievable sub-second latency and human-like conversation flow

I've tested several AI voice agent platforms, and Retell AI blows the competition out of the water when it comes to speed and conversational realism. The sub-second response latency completely eliminates that awkward "robotic pause" that ruins most AI calls. Callers frequently have no idea they are speaking to an AI agent because the turn-taking and interruption handling are so smooth. If you are building high-volume inbound or outbound setups, Retell is the definitive infrastructure layer to use. High reliability, great developer flexibility, and solid uptime. Highly recommended! Review collected by and hosted on G2.com.

nothing at all, retell ai is that good, exceptional Review collected by and hosted on G2.com.

I like how easy it is to build AI voice agents with Retell AI. The workflow builder is intuitive, and the voice sounds natural, which makes creating AI phone agents for real estate and dental clinic use cases a breeze. The integrations are very useful and save a lot of development time. I also found the pricing to be more transparent, and had a better overall experience getting started. The setup was easy because the interface is intuitive and easy to navigate. Review collected by and hosted on G2.com.

More ready-to-use templates for industries like real estate and dental clinics would make onboarding faster. More ready-to-use templates for business workflow would make it much faster to get started. Review collected by and hosted on G2.com.

Retell AI makes building production-ready voice agents surprisingly accessible. The platform is powerful enough for advanced automation workflows but still intuitive enough to get started without deep engineering experience. The voice quality, workflow flexibility, integrations, and ability to create realistic conversational agents for real business use cases are what stand out most. Review collected by and hosted on G2.com.

The platform can have a bit of a learning curve when publishing and troubleshooting live agent behavior, especially for first-time users. Some debugging steps and audio configuration options could be clearer, and more guided setup documentation would make onboarding smoother. That said, once you understand the workflow, it becomes much easier to use effectively. Review collected by and hosted on G2.com.

What I like best about Retell AI is how fast and flexible it is for building real-time voice AI agents. The call quality, latency, and conversational flow are impressive compared to many other platforms I tested. I also like how easy it is to integrate with automation tools like n8n, GoHighLevel, and OpenAI to create appointment booking and customer support systems. Review collected by and hosted on G2.com.

One thing I dislike is that advanced workflows and prompt tuning can still require a lot of testing and experimentation, especially for production-ready voice agents. The pricing can also become expensive when scaling or doing many test calls during development. More beginner-friendly templates and debugging tools would also help new users. Review collected by and hosted on G2.com.

The pay-as-you-go pricing is the biggest win for me. As a

solo founder running an AI receptionist agency in Auckland,

I do not want to be locked into big monthly fees before I

have proven the product to my clients. Retell lets me only

pay for what my agents actually use, which keeps cashflow

predictable and lowers the risk on each new build.

It is also genuinely easy to use. I built my first

multilingual agent (English, Mandarin, Korean) in a single

weekend with no coding background. The customisation is

deep too, voice speed, pause length, different voice

models, custom functions for booking and transferring

calls, and an attached knowledge base. Plenty of

flexibility for the different industries I sell to. Review collected by and hosted on G2.com.

Adding pronunciations is painful. I have to enter each word

one at a time, and for businesses with NZ place names,

foreign customer names, or industry jargon, it becomes a

huge time sink. A bulk upload or CSV import would save

hours per agent build.

The other thing is the lack of a public voice example URL.

I cannot link to a live demo of my agent on my website or

in marketing materials without first recording a call

myself, then uploading and hosting the audio. A

Retell-hosted shareable audio link would make showcasing

the product to prospects far easier. Review collected by and hosted on G2.com.