Introducing the Realtime API

What changed

Developers can now build fast speech-to-speech experiences into their applications

Why it matters

A concrete addition to Practical AI: Tools, Models & Frameworks: it changes what's available to builders today rather than being general commentary.

How it compares

Related prior coverage to compare against:

• Introducing gpt-realtime and Realtime API updates
• Advancing voice intelligence with new models in the API
• Gemini 3.1 Flash TTS: the next generation of expressive AI speech

• Introducing gpt-realtime and Realtime API updates similarity 0.47
• Advancing voice intelligence with new models in the API similarity 0.32
• Gemini 3.1 Flash TTS: the next generation of expressive AI speech similarity 0.24