Overview
GPT-5 unified fast responses, deeper reasoning, and automatic routing, with flagship, mini, and nano variants in the API.
GPT-5
GPT-5 unified fast responses, deeper reasoning, and automatic routing, with flagship, mini, and nano variants in the API.
MODEL NUMBER031
- Release date
- 2025-08-07
- Organization
- OpenAI
- Family
- GPT
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Specifications
Only published specifications are shown.
02
Overview
Why it mattered
It folded reasoning into the default product experience and established agentic coding as a core GPT capability.
PreviousGPT-4o— · 128K ctx
CurrentGPT-5— · — ctx
New capabilities Adjustable reasoning Coding Agent Tool use
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Architecture & capabilities
Key capabilities
Adjustable reasoningCodingAgentTool use
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Release history
GPT-5 launched in ChatGPT and the API.
View source06
Related models
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