Retell AI
Best for: small businesses that want a production-grade voice agent without engineering overhead.
Retell AI sits in the sweet spot between raw developer kits and closed no-code builders: a voice agent platform with a visual builder and templates plus API access when you need it, running at roughly 600ms end-to-end latency. Pricing starts around $0.07 per minute with no mandatory platform fee — the all-in number stays close to the headline, which is rarer than it sounds in this category. New accounts get $10 in free credit to test with.
It is still infrastructure you configure, not a receptionist-in-a-box: expect to design your call flows and test them. But for the money, Retell gives small businesses the closest thing to enterprise voice AI without enterprise contracts.
Pros
- Transparent per-minute pricing with no platform fee
- Low measured latency for natural conversations
- Visual builder plus API for both audiences
Cons
- Premium voices and heavy models raise the per-minute cost
- You still design and test your own call flows
- Support quality is a common complaint after payment
Pricing: from ~$0.07/min (usage-based; $10 free credit to start), as of October 2026 (pricing checked Oct 8, 2026 — confirm on the official site).
Prices change often — check the official site.