Retell AI
Build, test, and deploy phone voice agents with a visual flow builder.
Visit Retell AI Pay as you go from about $0.07/min; free trial minutes
What is Retell AI?
Retell AI lets teams build voice agents for phone and web with a visual conversation-flow builder or a single prompt, then test, deploy, and monitor them. It bundles telephony, speech, and LLM orchestration into one per-minute price.
Key features
- Visual conversation-flow builder and prompt-based agents
- Built-in telephony with number provisioning
- Batch outbound calling campaigns
- Post-call analysis, sentiment, and structured data extraction
- Warm transfer to humans and calendar integrations
Pros
- Faster to a working agent than pure API platforms
- Bundled pricing is simpler to forecast
- Good compliance posture for regulated industries
Cons
- Less provider flexibility than Vapi
- Flow builder becomes unwieldy for complex conversations
- Enterprise features gated behind higher tiers
Best for
Operations teams automating appointment and support callsAgencies deploying voice agents for clientsCompanies wanting a managed stack rather than raw APIs
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