OpenAI introduced GPT-Live on July 8, 2026 and describes it as a full-duplex voice architecture: it can listen and speak at the same time. GPT-Live-1 and GPT-Live-1 mini are rolling out in ChatGPT Voice, while API availability was described as coming later.
Primary source: OpenAI, “Introducing GPT-Live”.
Full duplex changes the mobile failure surface. The app may hold microphone input, play output, detect interruptions, and continue background work concurrently. A polished desk demo does not answer what happens when a phone call arrives, Bluetooth disconnects, the app backgrounds, or permission changes.
This is the test plan I would run before shipping a full-duplex voice workflow. It is a plan, not a report of measured GPT-Live API behavior.
Record the environment
