Is GPT-6 Astra available to ChatGPT Plus subscribers by 11 September?

BinaryResolves 11 Sep 2026

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Resolved: YES

OpenAI opened GPT-6 Astra to ChatGPT Plus subscribers on 4 September 2026, hours after Pro and Business plans and one day after the 3 September unveiling (9to5mac.com, 4 September 2026); Plus plans include GPT-6 Astra in ChatGPT Work and Codex, with the ordinary Chat window listed for Pro, Business and Enterprise plans only (notebookcheck.net, 7 September 2026).

Resolved 4 Sep 2026

How this resolves

(adjacent). OpenAI release notes or openai.com stating by 23:59 BST on 11 September 2026 that GPT-6 Astra is available to ChatGPT Plus subscribers. If that source has not published in time, Reuters and the Independent settle it.

The pattern behind it

5 of 8

Five of the last eight GPT versions with a traceable rollout reached free ChatGPT users within 15 days of their announcement: GPT-4o and GPT-5 on day one, GPT-5.3 Instant on day one, GPT-5.5 after twelve days and GPT-5.6 with its Terra tier at public launch. GPT-4.5, GPT-4.1 and GPT-5.4 stayed behind paid plans. Adding GPT-4 in March 2023 makes it five of nine. GPT-5.1 and GPT-5.2 are left out because no whitelisted page reachable at the rework states when free users received them.

Five of the last eight GPT versions reached free users in 15 days. We looked at every GPT version launched in ChatGPT since GPT-4o in May 2024 where an OpenAI page or a report from our approved sources said who could use it and when. For each one we asked if free ChatGPT users had a model of that version within 15 days of the announcement.

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Is GPT-6 Astra available to ChatGPT Plus subscribers by 11 September?

The pattern behind it

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