OpenAI
GPT-6.1 Sol Releases
Official changelog
Changelog | OpenAI API (covers all OpenAI models)
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Questions
When was GPT-6.1 Sol released
Sep 29, 2026, per developers.openai.com.
Where is the official GPT-6.1 Sol changelog
Changelog | OpenAI API, at https://developers.openai.com/api/docs/changelog.
Source: openai.com, read Nov 9, 2026.