Atlas record: https://www.aitimeline.dev/en/events/evt-0031/
Announcement · September 3, 2026
OpenAI introduced GPT-6 Astra for coding, scientific and professional work using computers and tools.
Such models require attention to action verification and the boundaries of delegated work, alongside answer quality.
Initial access was limited to organizations, with wider rollout planned for subsequent days. Vendor evaluations are not treated as independent verification.
OpenAI · Published September 3, 2026
DeepLearning.AI, The Batch · Published September 11, 2026
The post names as the second reason preliminary evidence that Astra might reach the critical cyber level; Astra was released on 3 September.
The generation before it in the same OpenAI line.
An independent evaluation of the model announced the same day.
OpenAI writes that Sol and Luna were trained with methods similar to Astra's and carry its gains into faster, cheaper models.
GPT-6.1 Astra was the model coming after GPT-6 Astra, released on 3 September; GPT-6 Astra remains the current flagship.
The model tested is GPT-6 Astra, which OpenAI released on 3 September, with its cyber classifiers switched off.
The page itself says that "last month" OpenAI introduced the first GPT-6 models for paid customers; this release brings the generation to the Chat tab for every plan.