The new GPT-Live uses a «full duplex architecture» that separates out the underlying language model and continuously processes speech.
This means it can do «mmm’s» and «yeah’s» during a conversation to indicate it is actively listening, but more importantly it can listen and speak at the same time.
OpenAI says GPT-Live makes decisions «many times per second» on whether to speak, listen, pause or interrupt, letting it engage more naturally in conversations — and do live translation.
The new model delegates more complex tasks to «the latest frontier model» (currently GPT-5.5) for reasoning or web search and gets back to you as soon as it is ready, sometimes showing cue cards for at-a-glance responses in the app.
GPT-Live is available today by tapping the Voice-button in the app or on the web for Go, Plus and Pro subscribers, and there is a GPT-Live-1 mini for the free tiers.
Read more: OpenAI’s presentation, launch thread, writeups on TechCrunch, The Verge, and Engadget.