Overview
OpenAI’s full-duplex voice model that listens and speaks simultaneously while delegating deeper reasoning and tool use to a backend model or agent.
GPT-Live-1
OpenAI’s full-duplex voice model that listens and speaks simultaneously while delegating deeper reasoning and tool use to a backend model or agent.
OpenAI made GPT-Live-1 available in the API on 2026-09-10; the official model page lists `gpt-live-1` as the default model, with voice sessions billed by the second and backend models and tools billed separately.
MODEL NUMBER058
- First public date
- 2026-09-10
- Organization
- OpenAI
- Family
- GPT
01
Specifications
Only published specifications are shown.
02
Overview
Why it mattered
GPT-Live-1 turns real-time voice from a chained speech-recognition, language-model, and speech-synthesis pipeline into a unified API voice layer while keeping the backend model replaceable.
03
Architecture & capabilities
Model capabilities
Native audioReal-time audioTool useAgent
04
Release history
OpenAI launched GPT-Live-1 in the API with full-duplex voice conversation and delegation of deeper reasoning and tool use to a backend model or agent.
View source05
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06
Sources
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