Retell AI
Build production-ready AI phone agents with ultra-low latency.
Production AI phone agents with low latency and strong call-handling primitives.
You need on-premise deployment of voice infrastructure.
About Retell AI
Retell AI vs. the alternatives
All voice agents →| Agent | Stars | Pricing | ||
|---|---|---|---|---|
| Retell AI | — | — | — | Paid product |
| xiaozhi-esp32-server | 10.0k | JavaScript | MIT | Open source |
| ten-vad | 2.2k | C | — | Open source |
| bailing | 1.7k | Python | MIT | Open source |
| RCLI | 1.5k | C++ | MIT | Open source |
| CyberVerse | 1.4k | Python | GPL-3.0 | Open source |
