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Don't Max to 1M: Why Codex Defaults to 300k Context

This story is from 2026-10-11. It is preserved in the archive; the latest stories are on the live feed.

Many developers running multi-turn AI coding agents notice a familiar frustration: after asking an assistant to patch two functions and run tests over an afternoon, their weekly quota warning suddenly turns red. Even worse, as the conversation stretches longer, the assistant starts forgetting files…

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  1. 2026-10-11 14:10 · DEV Community — AI
    Don't Max to 1M: Why Codex Defaults to 300k Context

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