OpenAI rebuilt ChatGPT's voice stack so GPT-Live can listen while speaking
A dedicated audio path keeps conversations moving while GPT-5.5 handles reasoning, search and tools in the background.
By Ryan Merket · Published
Primary source: OpenAI on X
Why it matters
GPT-Live separates real-time conversation from slower reasoning and tool use, establishing a new infrastructure baseline for developers building voice agents.
OpenAI engineers Justin Uberti and Zahan Malkani on August 3rd detailed a six-month rebuild of ChatGPT's voice infrastructure that lets GPT-Live listen and speak simultaneously while other models handle search, reasoning and tool calls in the background.…
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