OpenAI Unveils GPT-Live: A Real-Time Conversational Voice AI

OpenAI has rolled out GPT-Live, a new voice model built around full-duplex architecture — meaning it listens and speaks at the same time, instead of waiting for a pause before responding. It's now live for ChatGPT users on iOS, Android, and the web.

Why cascaded voice models felt off

Previous voice assistants — including ChatGPT's earlier Advanced Voice Mode — chained together three separate models: one to transcribe speech, one to generate a text reply, and one to speak it back. Each handoff lost information and added lag, and the system had to guess when you'd finished talking, which is why it so often interrupted mid-sentence or sat in awkward silence.

What full-duplex actually changes

GPT-Live processes audio continuously in both directions, making interaction decisions many times per second rather than waiting for a full turn to end. In practice that means it can be interrupted naturally, react to "mm-hmm" and other backchannel cues, and start responding before you've finished a sentence — much closer to how a phone call actually works.

What it can do

Beyond conversation, GPT-Live handles live translation, real-time web search mid-conversation, and delegates heavier reasoning tasks to backend models like GPT-5.5 without breaking the flow of the conversation.

Who gets which version

GPT-Live-1, the full model, is available to Plus, Pro, and Go subscribers. Free-tier users get GPT-Live-1 mini, a lighter version, as the default. API access for developers is coming separately.

Source: OpenAI