OpenAI Realtime API

OpenAI Realtime API is a WebSocket-based voice conversation service that enables bidirectional real-time audio streaming with GPT-4o, allowing developers to build voice applications without managing separate speech-to-text, LLM, and text-to-speech pipelines.

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9/12/2025

Stop Paying OpenAI $18/Hour: Realtime API Migration Guide

Your OpenAI Realtime API bill is too high. Learn how to drastically cut costs for voice conversations and seamlessly migrate your AI stack without quality loss. A comprehensive guide.

6 sections