Huge update for Codex and GPT-6.1 Sol: the context window has increased from 272K to 500K tokens.

First reported Oct 12, 2026, 06:58 UTC

Source reports

Huge update for Codex and GPT-6.1 Sol: the context window has increased from 272K to 500K tokens. Compaction works pretty well in my experience, but it takes a long time and interrupts the workflow. So I really like this change! Much better than another reset. — @kimmonismus (X), Oct 12, 2026, 06:58 UTC
PSA: starting today GPT 6.1 Sol has a default context window of 500k (from earlier 272k) This should mean fewer (2-3x) compactions on long running tasks and faster E2E task completion! All at no extra charge across Codex & ChatGPT Work - Enjoy!! — @reach_vb (X), Oct 12, 2026, 07:13 UTC
GPT-6.1 Sol теперь вмещает больше контекста ✨OpenAI увеличила стандартное контекстное окно модели в Codex и ChatGPT Work с 272 до 500 тысяч токенов - почти вдвое. Это позволяет работать с более объёмными документами, кодом и перепиской в рамках одного запроса. В дальнейшем лимит… — Закрепи.sender, Oct 12, 2026, 13:32 UTC

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