Retell AI

API that enables developers to build human-like voice agents

1. Plug in your custom LLM 2. Create Voice Agent 3. Integrate voice experience to phone/web through WebSocket

Building a convincing voice AI agent requires numerous optimizations for human-like interactions, low-latency, and conversational flow. Retell API handles these optimizations, and the costs come from the providers, not us.

No, it's very easy to set up with just a few lines of code. We also offer personalized support to guide you through the integration process.

The pricing is $0.10~$0.17 per minute depending on the voices you choose. It includes everything, covering the providers' costs. Each phone number costs $2 per month.