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.
🌟 Hi Product Hunt family! We are excited to launch our product - Retell AI: an API for building human-like conversational voice AI.
🌎 With the advancement of generative AI, we have witnessed significant growth in chatbot products that dominate the market. Simultaneously, voice AI has improved to the extent that smooth conversations with AI are now feasible. Many applications such as AI receptionists, AI interviewers, and AI sales emerge.
❓ Many developers may think that making a voice AI is easy, "If you just stitch together speech-to-text, LLM, and text-to-speech, then you can get the LLM to talk, right?"
🤔 Turns out, it's not that simple. Developers spend hundreds of hours on this but end up with robotic voices, long latency, awkward cutoffs, and speaking over each other, etc. There's actually a lot more going on in human conversation, which feels so natural to us that we don't consciously realize it.
We made an API that allows developers to create the most human-like voice agents in a day instead of months:
✅ Response time averages 800ms;
✅ Realistic voice;
✅ Can handle interruptions;
✅ Seamless turn-taking.
🙏 Please take a look at the demo video or try a live demo on https://retellai.com without signing in.
Any thoughts? 🙌
Congratulations on your launch.
Voice generation is an important step to get everything out of LLMs, so I can't stress enough how useful this is.
I am also thrilled to see that Retell AI can handle interruptions. An important feature I have been missing in similar tools.
I'd be thrilled to know how you did this.
@pixeleonard Thanks a ton! 🌟 Your excitement about voice generation and our interruption feature means a lot. We're keen to share the magic behind it in our upcoming blogs. Stay tuned! 😄
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 AI offers an amazing AI platform that has allowed us at Action2Call.com to create incredibly effective conversational AI agents for our clients. The platform is intuitive, adaptable, and has helped us streamline communication processes while providing top-tier service to businesses across various industries. Highly recommended! - Sarah Evens, Marketing Director, Action2Call.com.
Retell AI - Voice AI Agent
Retell AI - Voice AI Agent
Retell AI - Voice AI Agent
Retell AI - Voice AI Agent
Retell AI - Voice AI Agent
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Retell AI - Voice AI Agent
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Retell AI - Voice AI Agent