Retell AI
#1 AI Voice Agent Platform for Automating Calls

Retell AI is a platform for building, testing, deploying, and monitoring AI-powered voice agents that can handle inbound and outbound phone calls at scale. It uses low-latency speech recognition, large language models, and real-time function calling to create humanlike conversational agents for use cases like appointment setting, customer service, and debt collection. The platform integrates with existing telephony systems via SIP trunking and offers compliance with HIPAA, SOC2 Type II, and GDPR.
Retell AI orchestrates speech recognition, LLM-based conversation understanding, and text-to-speech with ~600ms latency to power autonomous voice agents that can be configured via a drag-and-drop framework and integrated with existing telephony and business tools.
Businesses and enterprises looking to automate phone call operations at scale
Background.
- Status
- launched
- Business model
- freemium
- Company
- Retell AI
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