Voice

Retell AI

Production-ready platform for building ultra-low-latency, interruption-aware voice agents.

Overview

Retell AI specializes in real-time conversational voice, featuring advanced voice activity detection (VAD), dynamic interruption handling, and tool/function calling within voice flows. It integrates tightly with modern LLMs and supports both web and PSTN dialing.

Best for

high-fidelity voice agents
tool-use phone bots
multimodal voice assistants

Trade-offs

vs Vapi

Retell AI excels at interruption handling and function calling for complex workflows; Vapi is more provider-agnostic and easier to bootstrap for simple chat-to-voice.

What XeroHack pre-wires

When you pick Retell AI in the interview, the engine emits these files into your scaffold:

dynamic agent routing
tool use schema
call analytics dashboard

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