Vapi
- Best for developer-led voice agent products.
- Public hosting signal is commonly modeled at $0.05 per minute.
- Stack costs can vary based on LLM, STT, TTS, telephony, and provider keys.
Vapi vs Retell AI
Choose Vapi when your engineering team wants deeper API control. Choose Retell AI when you want a more managed voice agent workflow and a pricing range that bundles more of the stack.
Retell AI
- Best for teams that want more managed agent tooling.
- Public pricing signal is commonly expressed as a per-minute range.
- Useful when speed to launch matters more than stack-level control.
Estimate your voice agent spend
Model the monthly bill before you commit to a voice AI platform.
Estimated monthly cost
$500
Estimated calls
2,500
Platform hosting cost; LLM, STT, TTS, and telephony may be additional or brought with your own keys.