Codex 默认上下文扩容至 500k：GPT-6.1 Sol 支持百万级窗口以缓解压缩损耗

出处作者 / 发布主体：宝玉 (@dotey)

42AI 研判分

核心综述

OpenAI 将 Codex 中 GPT-6.1 Sol 的默认上下文长度从约 272k 提升至 500k，增幅近 80%，旨在减少长任务中的上下文压缩频率。该模型最大支持 1M 上下文窗口，用户可根据需求手动调整配置。

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Codex 默认上下文以前大约是200k到300k之间，现在变成500k了，可以减少压缩频度；最大上下文长度可以到 1M

↳ 引用 @thsottiaux (Tibo): Day 7/

We have increased default context length for GPT-6.1 Sol to 500k when used through Codex & Work, up from 272k or an ~ 80% increase.

We will go higher in the future, but it helps reduce occurrence of compactions and with tasks that require keeping a lot of context and nuance over periods of time. It was carefully tested and is the new sweet spot for most of our users. You can still override it if you want to be higher our lower, with maximum context length of GPT-6.1 Sol of 1M.