OpenAI replaced ChatGPT's voice mode with new full-duplex models GPT-Live-1 and GPT-Live-1 mini. These models let the assistant speak and listen at the same time, avoiding awkward interruptions and enabling live translation.

The voice model streams complex queries to text models like GPT-5.5 in real time, can pause to absorb context, and shows visual responses. The voice product lead uses it for 30-40 minute walks. Live translation still struggles, with a strong American accent on Hindi demos.