DEEP EXPLANATION

OpenAI Realtime and Voice APIs: Architecture for Voice Agents (EXPLAINED)

Project BasedGPTHard22 min read

TL;DR — Quick Answer

Use WebRTC/WebSocket realtime session, voice activity detection, streaming tool calls mid-utterance, barge-in handling, fallback to text if audio fails, and moderate both transcript and audio policies.

The Interview Question

Design a low-latency voice agent using OpenAI Realtime API. Cover audio pipeline, turn-taking, tools, and failures.

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