Retell AI
A developer-first platform for voice AI agents: build and deploy call agents with per-minute pricing and built-in telephony.
Description
Retell AI is a platform for building voice AI agents. Developers configure agents for phone calls without binding to one model, use built-in telephony, tool calling and pay only for actual usage by the minute.
Key features
- Model-agnostic voice agent building
- Built-in telephony and SIP
- Tool calling
- Per-minute billing
- Human handoff
Pricing
Usage-based model: rates from $0.07 to $0.31 per minute depending on the chosen voice model.