Retell AI - Voice AI Agent
Hire your AI call center
Retell AI is a YC-backed AI call center platform that enables businesses to build, deploy, and manage AI-powered phone agents for sales, support, and appointment scheduling. With advanced conversational AI, integrations, and automation tools, Retell AI helps companies streamline customer interactions and scale voice operations efficiently.
Reviews for Retell AI - Voice AI Agent
Hear what real users highlight about this tool.
Reviewers praise Retell AI for lifelike, low-latency conversations, smooth interruptions, and strong reliability at high call volumes. Users switching from Vapi, Twilio, and DIY stacks report better conversion rates, fewer errors, and easier scaling, with kudos for ready-made integrations, memory handling, and insightful reporting. Makers of Cal.com say Retell powers their AI model and is a fantastic partner, while makers of Relyable call it one of the best platforms for building voice agents. Minor critiques mention mid-tier pricing gaps and limited UK usability. Overall sentiment is overwhelmingly positive.
This AI-generated snapshot distills top reviewer sentiments.
Retell powers our AI model and is a fantastic partner to work with
One of the best platforms for developing AI Voice Agents!
I’ve been using Retell AI for a while now, and I can confidently say it’s one of the most game-changing platforms I’ve worked with. In a world where voice AI is rapidly evolving, Retell stands out not just for its cutting-edge capabilities but also for how easy it makes deploying voice agents that sound natural, fluid, and human.
From the moment I onboarded, the experience has been incredibly smooth. The documentation is clear, the setup process is intuitive, and within no time, I was building voice experiences that would’ve taken weeks (or even months) using traditional telephony stacks or cobbling together other APIs.
One of the things I admire most about Retell AI is its true real-time performance — there’s practically no lag, the agents interrupt like real humans, and the voices are incredibly lifelike. This kind of responsiveness is crucial when you’re trying to create a seamless customer experience or automate real conversations. Other platforms claim to be real-time, but Retell actually delivers on that promise.
And then there's the customizability. Whether it’s agent scripting, webhook logic, or integrating into your own backend systems, Retell gives you the flexibility to fine-tune every aspect of the conversation flow. It doesn’t box you into one way of doing things — it empowers you to build exactly what you need.
The pricing is also fair and scales well with usage, which is perfect whether you’re testing an MVP or scaling to handle production traffic. On top of that, the support team is phenomenal. Every time I’ve reached out — whether it was a quick question or a technical deep dive — I’ve received thoughtful, prompt, and helpful responses. It’s clear the team truly cares about its users and is deeply invested in building a world-class product.
If you're even remotely considering building a voice product — whether it's a customer service agent, a sales dialer, or something more creative — I highly recommend giving Retell AI a try. It's fast, reliable, powerful, and built by a team that clearly understands the future of voice.
This is the kind of tool that doesn't just help you build — it helps you innovate.
Retell’s voice agents are amazing - seamless to deploy, easy to configure, and a game-changer for voice interactions.
We started out using Vapi for outbound lead qualification. It worked okay for small call volumes, but as soon as we scaled past 2,000 calls a month, the cracks showed latency, inconsistent tone, and frequent errors. Moving to Retell AI was the best decision we’ve made in customer engagement. The voice agents sound so natural that customers often ask which rep they spoke to, not realizing it was AI. Onboarding was smooth, integrations were ready-made, and the reporting dashboard gave us real visibility into agent performance. Retell just feels like it was built for production scale, while competitors felt like prototypes.
I rarely take the time to write reviews, but Retell AI truly deserves recognition. It has become an indispensable part of our business, almost like adding a dedicated team of highly skilled agents who never sleep, never burn out, and always perform at the highest standard. The technology adapts seamlessly to different customer needs and scenarios, which means we don’t have to worry about missed opportunities or inconsistent service. Retell AI gives us confidence and peace of mind, which is invaluable.
Great UX and UI. The app looks solid and fundtional. Pricing model is not that great. There is the free option with cost per minute and the entreprice pricing is custom which doesnt really serve good for a mid size usage.
ReTell has been one of the tools our customers use to build voice agents. Alongside the ReTell team and their growing community, we were able to introduce new features and capabilities to our Cloudonix media stack, making it the ideal solution to interface various communications systems with ReTell.
I prefer Retell AI - Voice AI Agent over alternatives because it offers more natural responses, easy integration with CRM and automation systems, and a high level of customization, making it more efficient for my business."
Retell AI stands out due to its affordability, multi-language support, and reliability. Unlike alternatives, it offers an ideal balance of cost-effectiveness and global accessibility, which is critical for a project like ours that serves a diverse audience.