OpenAI just shipped three realtime voice models through their API. One reasons at GPT-5 level during live calls. One translates 70+ languages in real time. One does streaming transcription. All available today.

Let me break down what matters for developers.

The Three Models

GPT-Realtime-2 handles voice conversations with GPT-5-level reasoning. The key difference from previous voice models: it can call tools mid-conversation without going silent. It narrates what it's doing while executing — OpenAI calls this "preamble."

GPT-Realtime-Translate does real-time voice translation. 70+ input languages, 13 output languages. End-to-end audio processing (no intermediate text step), which preserves tone and emotion.

GPT-Realtime-Whisper is streaming speech-to-text. Words appear as the speaker talks.…