# Retell AI

> Voice agent platform for automating inbound and outbound phone calls like booking, support and collections

Source: https://dontaskagain.com/retell
Website: https://www.retellai.com/?utm_source=dontaskagain
Pricing: Paid
Categories: [Voice agents](https://dontaskagain.com/categories/voice-agents.md)
Listed: 2026-10-23
Updated: 2026-10-23

Retell AI is a platform for building voice agents that automate phone calls. Its agents answer and place calls for a business, acting as receptionists, booking appointments, qualifying leads, handling customer service, running surveys and collecting debts.

**Key features:**

- No-code studio with a drag-and-drop canvas for call flows.
- Call transfers, DTMF, SMS, functions and custom logic.
- Knowledge base answers and IVR navigation.
- Simulation testing that turns real calls into regression tests.
- Deployment for inbound calls, outbound campaigns, web and SMS.
- Post-call analytics, AI quality assurance, PII removal and safety guardrails.

Retell integrates with Twilio, Vonage, HubSpot and n8n and supports models from several providers. Pricing is pay as you go with $10 in free credits, $0.07 to $0.31 per minute for voice agents and 20 free concurrent calls. The Enterprise plan adds volume pricing, custom SSO, RBAC and 24/7 support.

## More voice agents

- [ElevenLabs Agents](https://dontaskagain.com/elevenlabs.md): Platform for building and deploying voice and chat agents that handle support, sales and scheduling in 90+ languages
- [Sierra](https://dontaskagain.com/sierra.md): Platform for building customer-facing agents handling service and sales conversations across chat, voice and messaging
- [Decagon](https://dontaskagain.com/decagon.md): Customer service agents for enterprises that resolve requests across chat, voice and email
- [Vapi](https://dontaskagain.com/vapi.md): Developer platform for building, testing and deploying voice agents that answer and place phone calls
- [Bland](https://dontaskagain.com/bland.md): Enterprise voice agents that handle regulated phone calls like patient triage, claims and payment changes
- [Synthflow](https://dontaskagain.com/synthflow.md): Enterprise voice agent platform that automates high-volume phone calls on its own telephony network
- [PolyAI](https://dontaskagain.com/polyai.md): Enterprise dialog agents that resolve customer calls and chats end to end, built in Dialog Studio or via API
- [Hippocratic AI](https://dontaskagain.com/hippocratic-ai.md): Library of clinical voice agents that call patients for intake, outreach, care management and follow-up