Overview
The Sol tier of the GPT-6 line for complex coding, reasoning, and long-running agent workflows, with a 1.05M context window and 128K output limit.
GPT-6 Sol
The Sol tier of the GPT-6 line for complex coding, reasoning, and long-running agent workflows, with a 1.05M context window and 128K output limit.
OpenAI’s official API catalog and model page list `gpt-6-sol`; the model is available through the Responses API with OpenAI’s built-in tools.
MODEL NUMBER058
- First public date
- 2026-09-22
- Organization
- OpenAI
- Family
- GPT
01
Specifications
Only published specifications are shown.
02
Overview
Why it mattered
Sol joins Astra and Luna as a distinct current GPT-6 API tier, with an explicit model ID and positioning in OpenAI’s official model documentation.
03
Architecture & capabilities
Model capabilities
CodingImage generationLong-horizon agent
Connected tools
Computer useWeb searchFile searchCode interpreter
API features
Adjustable reasoning
04
Release history
OpenAI’s official API catalog and model page list GPT-6 Sol with a 1.05M context window, 128K output limit, and Responses API tool use.
View source05
Related models
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06
Sources
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