Inside GPT Realtime Voice: No Turn Detector, No VAD, Asynchronous Reasoning
juberti · x · 2026-08-05
Addressing developer questions about whether voice conversations rely on VAD, an expert clarified the underlying mechanics of GPT's Realtime voice mode.
- Core Mechanism: The voice model directly controls the conversation, with audio continuously flowing in and out.
- Asynchronous Processing: Deeper reasoning and tool use happen asynchronously in the background rather than blocking the audio stream.
- No VAD Dependency: The system does not use a traditional End-of-Turn (EoT) model or VAD to artificially interrupt or manage conversational turns.
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