Retell AI
Voice Agents · Free + paid
Platform for building conversational voice AI agents
At a glance
- Made by
- Retell AI
- Korean
- None (English and a few others only)
- API
- Yes
- Available on
- Web, CLI, API
What is Retell AI?
Retell is a platform for building, testing, deploying, and monitoring AI voice and chat agents with built-in phone and messaging features, prompts, tools, and analytics. Retell runs the telephony, voice, and language model layers, so you focus on configuring the agent instead of connecting providers. You design complex call flows on a drag-and-drop canvas and validate them with scenario simulations and regression tests based on real calls. You deploy to inbound and outbound campaigns, web, and SMS, with call QA and custom analytics.
- Design call flows on a drag-and-drop canvas (functions, integrations, call transfer, DTMF, SMS)
- Simulate thousands of scenarios and run regression tests based on real calls
- Deploy to inbound and outbound campaigns, web widget, and SMS
- AI quality assurance (QA) on up to 100% of calls, custom analytics and A/B comparison
- IVR menu navigation, live call listening and intervention, handoff to human agents
- Reflect CRM information and log call results
- Webhooks, API, SDK, MCP, CLI
Who uses Retell AI and for what
- AI receptionist and scheduling
- Lead qualification
- Customer service and debt collection calls
Pricing
What you get for free — Yes ($10 free credit, then usage-based billing, 20 concurrent calls included)
| Plan | Price | Main limits |
|---|---|---|
| Pay as you go (voice) | $0.07 | $0.07 to $0.31 per minute (depending on LLM and voice choice), 20 concurrent calls included |
| Pay as you go (chat) | $0.002 | From $0.002 per message |
| Enterprise | Contact sales | Custom pricing, no concurrent call limit |
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying. · Official pricing page
AI tools similar to Retell AI (alternatives)
Retell AI vs. alternatives at a glance
| AI | Pricing | Combos on the map | Connected tools | Free | Cheapest monthly | Korean |
|---|---|---|---|---|---|---|
| Retell AI | Free + paid | 0 | 5 | Yes | — | No |
| Bland AI | Free + paid | 0 | 6 | Yes | $299/mo | No |
| ElevenLabs Agents | Free + paid | 0 | 6 | Yes | $6/mo | No |
| LiveKit Agents | Free | 0 | 6 | Yes | $50/mo | No |
| Pipecat | Free | 0 | 6 | Yes | — | No |
5 of these 5 tools have a free plan. Cheapest paid plan: ElevenLabs Agents ($6/mo).
Combo and connection counts are based on the relationships recorded on AI Galaxy Map (2026-10-26); they are not a quality ranking.
Retell AI on AI Galaxy Map
- One of 7 AI tools in the Voice Agents field.
- Connected to 5 other tools — #6 in its field.
Frequently asked questions
Can I use Retell AI for free?
Yes ($10 free credit, then usage-based billing, 20 concurrent calls included). Prices can change, so check the official site before paying.
What AI can I use instead of Retell AI?
Tools that do the same job, such as Bland AI, ElevenLabs Agents, LiveKit Agents, Pipecat, are connected to it on the map.
Can I use Retell AI in Korean?
None (English and a few others only)
Sources (official pages)
- https://www.retellai.com/
- https://docs.retellai.com/general/introduction
- https://www.retellai.com/pricing
Checked on the official pages on 2026-10-14. Prices and features can change, so check the official site again before paying.