OpenAI ships GPT-Live-1 voice API with full-duplex and tool delegation
OpenAI’s GPT-Live-1 is live in the API: a full-duplex voice model that listens and speaks at once, handles interruptions in one pass, and can hand deeper reasoning or tools to a backend like GPT-6 Astra. Front-end voice is $0.05/min; telephony and broader voice options are included.