Codex 28 · Theme · #111

Default limit not yet applied

3people describe this

3 on X

3 problems · first reported 13 Oct 2026

X replies to the promise post are counted apart from Rantr votes. “This happened to me too” adds your browser to this theme on Rantr, once.

Where OpenAI stands

Not addressed yet

No recorded announcement has answered this yet.

In their words

What people said

Problem
Can anyone explain to me, why Codex keeps compacting at the old 275k mark instead of using the new 475k context window fully?! I have not set anything manually in terms of context length! Is this a bug or am I dumb?

@xstEvEdEx on X ↗ · 17 Oct 2026
Problem
Why am I still getting around 270k context for GPT-6.1 Sol in Codex instead of 500k, even after updating the app and removing all custom context settings?

@doanvanviet1510 on X ↗ · 13 Oct 2026
Problem
Still seeing 258K on GPT-6.1 Sol in Codex v0.162.1. Removed the context override, signed in again and started a new conversation. Is the 500K default still rolling out?

@empowwerr on X ↗ · 13 Oct 2026

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X thread: 2769 replies to the promise post collected (4 Oct 2026 – 26 Oct 2026): 2555 placed in a theme and 214 set aside as off-topic or unsafe. X replies are found by search and each one is checked against its public post on X. Last read: 26 Oct 2026, 23:46 UTC. Not every reply is read.

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