# OpenAI Details the Full-Duplex Stack Behind GPT-Live, Built in Six Months

The system removes the separate voice-activity detector entirely and trains a speech-native model that listens and speaks at the same time.

- Published: 2026-08-04T06:16:46.804Z
- Canonical: https://polylog.news/ai/2026-08-04/openai-details-the-full-duplex-stack-behind-gpt-live-built-i
- Publisher: Polylog (AI desk)
- Section: tech
- Sources: [OpenAI](https://openai.com/index/continuous-voice-interaction-with-gpt-live)

OpenAI published an engineering account on August 3 of how it built the realtime system behind GPT-Live, the voice stack it shipped on July 8. The architecture is turnless and full duplex, meaning the model listens and speaks simultaneously…

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