Lesson 1: What Retell Does

Retell University Module 1: What Is Retell?
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What Retell Does

Retell AI is a platform for building, testing, deploying, and monitoring AI phone agents — voice-powered AI that handles real phone conversations.

Core Value Proposition

  • Automate inbound and outbound phone calls with AI agents that sound natural
  • Replace or augment human call center agents for repetitive call flows
  • Handle use cases like appointment setting, lead qualification, customer service, debt collection, and surveys

How It Works (High Level)

  1. Build — Create an AI agent with a prompt, voice, and conversation logic
  2. Test — Use the playground or simulation testing to validate behavior
  3. Deploy — Connect a phone number and start taking/making calls
  4. Monitor — Track call outcomes, analyze transcripts, and optimize

Key Differentiators

  • Ultra-low latency (~800ms response time)
  • Natural turn-taking and interruption handling
  • Enterprise-grade: HIPAA, SOC 2, PCI DSS compliant
  • Works with your existing telephony (Twilio, Vonage, custom SIP)