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- Sep 29, 2026100% CONFIDENCEfrom openai.com
GPT-6.1 Sol Released
- OpenAI released GPT-6.1 Sol on September 29, 2026, upgrading GPT-6 Sol for coding, computer use and professional work.[3]
- At launch it was available in ChatGPT Work and Codex for Plus, Pro, Business, Enterprise and Edu users, and through the API as gpt-6.1-sol.[1]
- Standard API rates per million tokens are $2 for input, $0.10 for cached input and $10 for output. Input and output prices are one-fifth of GPT-6 Astra’s.[1]
- OpenAI reports that Sol matches Astra on DeepSWE 1.1 at roughly one-fifth the cost; it improves on GPT-6 Sol by 4.8 percentage points on AutomationBench at medium reasoning effort and by seven points on OSWorld 2.0 at maximum effort. These are vendor evaluations, with costs and results depending on settings.[1]
- OpenAI also reports improved factuality and scientific workflow performance, while Astra remains strongest on its scientific benchmark. Ultrafast, promising up to eight times faster token generation in Codex, was announced as coming later.[1]
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- [1]90%openai.com/index/introducing-gpt-6-1-solopenai.com· Posted Oct 6, 2026· Starts Sep 29, 2026· 34% of score
OpenAI’s[2][3] product news index explicitly dates Introducing GPT-6.1 Sol September 29, 2026; the announcement states availability starting on its publication day.
- [2]80%GPT-6.1 Sol in the API: a meaningful step up in cost-performancecommunity.openai.com· Published Sep 30, 2026· 33% of score
OpenAI’s[1][3] own developer-community announcement supplies the GPT-6.1 Sol benchmark image.
- [3]100%OpenAI Product News and Updatesopenai.com· Published Sep 29, 2026· Starts Sep 29, 2026 ✓· 33% of score
The official product index lists Introducing GPT-6.1 Sol as Product, Sep 29, 2026.[1]
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