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Overview
Retell AI is an LLM-based conversational platform for building, deploying, and managing AI voice agents that handle phone calls at scale. It uses proprietary voice orchestration for natural, low-latency conversations and can autonomously handle lead qualification, support, and appointment booking.
✨ Features
Low-Latency Voice
Proprietary turn-taking and realistic voices deliver natural conversations at ~600ms latency.
Agentic Builder
A drag-and-drop framework with real-time function calling and streaming RAG.
Flexible Deployment
Supports batch calling, branded caller ID, verified numbers, and SIP trunking.
Quality Monitoring
Post-call analysis, AI quality assurance, simulation testing, and analytics dashboards.
⚖️ Pros & Cons
Pros
✓ Very low latency with realistic voices
✓ Generous pay-as-you-go with free credits
✓ Strong enterprise compliance (HIPAA, SOC2, GDPR)
Cons
✗ Per-minute costs add up at high call volumes
✗ Enterprise pricing requires contacting sales
💰 Pricing
Pay as you go
$0.07/min
- Voice agents $0.07-$0.31/min
- Chat agents from $0.002/message
- $10 free credits to start
- 20 free concurrent calls
- Call analytics and transcripts
Enterprise
Custom
- Contact sales for a quote
- Dedicated stable server
- Unlimited concurrent calls
- SSO and custom MSA/DPA
- 24/7 omnichannel support