Retell AI
Voice AI platform for building and deploying autonomous phone agents
Worth knowing: No free plan
Where people discuss it: Product Hunt ↗
The platform combines speech recognition, text-to-speech synthesis, telephony, and language models into a unified conversational pipeline. Teams can swap underlying LLMs dynamically, connect existing telephony through SIP trunking, and call external tools or CRMs during active calls. Billing follows a usage-based structure charged per call minute without recurring platform fees, supplemented by enterprise tiers for custom deployments.
- Category:
- Agents
- Price:
- From $0.07 usage-based
- Free plan:
- No
- Works on:
- Web, API
- Integrates with:
- Twilio, Telnyx, Salesforce, HubSpot, Zapier, n8n
- Prices checked:
- , against retellai.com
Retell AI pricing
As printed on retellai.com on October 12, 2026
Figures are copied from the vendor's own pricing page, never calculated or converted, and a tier we could not confirm is left out rather than estimated. Pricing changes without notice. Check retellai.com before you buy ↗
At a glance
- Free trial
- Yes
- Team plan
- Yes
- Open source
- No
- Self-hostable
- Yes
- Capabilities
- AI agents Speech-to-text Text-to-speech Voice cloning Developer API Workflow automation
- Also listed in
- AI voice and speech tools →
Featured on
Last confirmed: against retellai.com. Information may have changed since then; check the vendor before you buy. How we check.
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What Retell AI does well
- ✓ Automating inbound support lines and after-hours call routing
- ✓ Running multi-step outbound calling campaigns and appointment scheduling
- ✓ Developers needing programmatic voice primitives and custom LLM integration
Key features
- Sub-second voice response latency of approximately 600ms
- Interruption handling that pauses speech when callers cut in
- Support for more than 50 languages with mid-call switching
- SIP trunking and BYO telephony support for Twilio and Telnyx
- Live human handoffs with context transfer
A tool we have an affiliate relationship with. Not a recommendation over Retell AI.
- Running automated signal-based outbound sequences
- Consolidating separate lead data and sales engagement stacks
- Scaling personalized cold outreach across email and LinkedIn
People also ask
What response latency does Retell AI achieve on phone calls? +
Retell AI achieves approximately 600ms response latency for conversational turn-taking, allowing smooth interactions without long pauses.
Can Retell AI transfer live calls to a human agent? +
Yes. Retell AI supports warm transfers where the AI briefs human agents and answers preliminary questions before completing the handoff.
Can developers use their own language models with Retell AI? +
Yes. Retell AI supports connecting a custom LLM over WebSockets while the platform manages telephony and conversation turn-taking.
Is Retell AI free? +
No, Retell AI publishes no free plan, as of October 12, 2026. Paid plans start at $0.07 usage-based.
How much does Retell AI cost? +
As of October 12, 2026, Retell AI lists 2 plans: Pay as you go at $0.07 usage-based, Enterprise Plan (custom pricing).
What platforms does Retell AI run on? +
Retell AI runs on Web, API.
What does Retell AI integrate with? +
Retell AI officially integrates with Twilio, Telnyx, Salesforce, HubSpot, Zapier, n8n.
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Pricing & Product Hunt
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For the Retell AI team: add a badge to your site
Retell AI was the AI Tool of the Day on October 12, 2026. The badge says that and links here. It is a fact about this listing, not a rating or an award.
Launch post, changelog or press page? The Retell AI kit has a one-line mention, the share card and ready-to-post text.
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