OpenAI · GPT-6 Astra

GPT-6 Astra

Released 3 September as a limited preview for trusted partners, with OpenAI claiming state of the art on computer use, browser use, software engineering, cybersecurity, science and professional work, and better adherence to task boundaries than its predecessors. It says the model earned perfect or near-perfect scores on key reasoning benchmarks, ahead of GPT-5.6 Sol and Claude Fable 5, though no specific figures were published. Rollout starts with cybersecurity partners before reaching paid ChatGPT tiers and the API. Note: openai.com returned 403 to our fetch, so this entry rests on secondary coverage rather than the announcement itself.