https://platform.openai.com/docs/models/gpt-5.2 400k, not 256k. | Hacker News

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		coder543 8 days ago \| parent \| context \| favorite \| on: GPT-5.2 https://platform.openai.com/docs/models/gpt-5.2 400k, not 256k.

nathants 8 days ago [–]

400 - 128 = 272. Codex cli source.

coder543 7 days ago | [–]

If you want to be able to generate up to 128k tokens in one go successfully, then yes, that math checks out.

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