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Retell AI
Production-grade voice AI infrastructure — pay per minute, no subscription floor, ~600ms latency.
Pay-as-you-go from $0.07/min with no platform fee; all-in rates run $0.07–$0.31/min depending on voice and model choice. $10 free credit on signup; 20 concurrent calls included ($8/mo per extra line). Pricing from vendor's site, Oct 2026. Last verified 2026-10-17.
Key features
- Human-quality voice agents with ~600ms end-to-end latency
- Real-time function calling: live calendar booking, MLS lookup, CRM writes during the call
- SIP trunking — works with Twilio, Telnyx, or your existing phone system
- Bring-your-own LLM (GPT-4o, Claude, Gemini) — no vendor lock-in
- 55+ languages; inbound, outbound batch campaigns, and web agents
Pros
- No monthly minimum — a solo agent's typical month lands near $80
- Lowest latency tested in its class
- One bill instead of juggling voice/model/carrier invoices
Cons
- You design the call flows — not turnkey like Structurely
- Headline rate hides per-model variance
- Built for builders; non-technical agents face a learning curve