Retell AI
retellai.com- Category
- AI Agents
- Rank
- No. 220Tools index
- Pricing
- Freemium
- Platform
- web
- Type
- APP
- Added
- Jul 2, 2026
About
Retell AI is a third-generation AI voice agent platform that lets businesses build, deploy, and manage human-sounding AI agents for automating phone calls at scale. It supports complex, multi-turn conversations powered by LLMs — far beyond traditional IVR systems — enabling use cases like lead qualification, customer service, appointment booking, and debt collection. It's designed for large support and sales teams who want to automate inbound and outbound calls without sacrificing call quality.
What it can do
Conduct automated inbound and outbound phone calls
Phone number list and call script or LLM prompt configuration → Completed phone calls handled by an AI voice agent
Qualify sales leads via voice conversation
Inbound or outbound call with a prospect → Structured lead qualification data and call outcome summary
Book appointments through phone conversations
Caller request and available calendar data → Confirmed appointment scheduled on behalf of the business
Handle multi-turn customer service calls
Customer phone call with support questions → Resolved customer inquiry with conversational AI responses
Deploy and manage AI voice agents at scale
Agent configuration, LLM prompts, and telephony settings → Live AI agents capable of handling concurrent phone calls
Automate debt collection calls
Debtor contact list and collection script → Completed outbound collection calls with logged interaction results
Transcribe and log phone call conversations
Live or recorded AI-handled phone call → Text transcript and structured call summary
Why it made the leaderboard
If you're building automated phone workflows — customer service, lead qualification, appointment setting — Retell AI lets you deploy LLM-native voice agents that handle real conversations without the brittleness of legacy IVR trees. The live demo call feature and native integrations with Twilio, HubSpot, and GoHighLevel mean you can go from concept to production phone agent faster than building on raw telephony APIs.
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Indexed by a proprietary survey. Corrections welcome.