Retell AI

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Retell AI, a platform to build, test, and monitor voice AI agents; established dev tool.

What it does

Retell AI provides an API that enables developers to build human-like voice agents. It offers features to build, test, deploy, and monitor AI voice agents at scale, with integrations to various platforms and services.

Core features

✦Voice AI API
✦Agent Builder
✦Call Transfer
✦Appointment Booking
✦Knowledge Base Auto-Sync
✦IVR Navigation
✦Batch Calling
✦Verified Phone Numbers
✦Branded Call ID
✦Post Call Analysis

Use cases

→Receptionist
→Appointment Setter
→Lead Qualification
→Survey
→Customer Service
→Debt Collection

Reviews

Big-picture takes: what it's for and whether it delivers. High-engagement videos from YouTube — not sponsored.

Retell AI - Hyper Realistic AI Voice Agent

Retell AI · 108K views

Retell AI Basics: Everything You Need to Start Building Voice Agents

Tech Tomlet · 55K views

Retell AI: From Zero to Voice Agent in 10 Minutes (Full Guide 2026)

Charlie Barber · 25K views

Tutorials

Step-by-step: exactly how to get things done with it.

Retell AI Tutorial - 2026 | How to Build a Voice AI Agent & Automate Calls | How to Use Retell AI

Dan - Smart Tutorials · 32K views