OpenAI releases GPT-6.1 Sol
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GPT-6.1 Sol released — the company claims it beats GPT-6 Sol's best scores by 6.4 percentage points on the DeepSWE v1.1 coding benchmark, by 4.8 points on AutomationBench and by 7 points on OSWorld 2.0 computer use, and scores more than 2 times higher on Terminal-Bench Science. Says it cut the factual error rate at low reasoning effort from 11.4% to 7.7%. Priced per 1M tokens at $2.00 input, $0.10 cached input and $10.00 output, it is positioned as offering intelligence close to Astra at 1/5 of GPT-6 Astra's standard rate. Available the same day across Plus, Pro, Business, Enterprise and Edu in ChatGPT Work and Codex, and in the API (gpt-6.1-sol). An Ultrafast version with up to 8 times faster token generation is planned for later.
Why it matters
A mid-tier update released alongside Anthropic's Sonnet 5.5 in the same week. That two labs simultaneously touted "nearly the same work at 1/5 of the frontier price" shows the competitive axis of the second half of 2026 moving from top performance to price per unit of performance.
Source — Primary sources first; secondary reports are labelled “Press”
Officialopenai.comhttps://openai.com/index/introducing-gpt-6-1-sol/Added in Week 41, 2026 · See that week
On the map — ⑥ Reasoning Models line
- Previous stopClaude Sonnet 5.5
- This recordGPT-6.1 Sol
- Next stopGemini 4 Carbon
In the model family tree — GPT family · 23 versions
- Earlier versionGPT-6 Sol / GPT-6 Luna
- This recordGPT-6.1 Sol
- Later versionThe latest version in this branch