Expired50% confidenceFactExact time
Codex uses a 'sliding window + summary compression' strategy to condense earlier conversation content into brief summaries, controlling actual token count per turn.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
7/2/2026
First Seen
Valid until: 9/30/2026(expired)
Sources
Codex vs Claude Code: The Truth Behind the 10x Bill Difference & a Practical Selection Guide
bilibili九天Hector课程拆解6/11/2026
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UnverifiedCodex内置自动压缩历史上下文功能，通过摘要化和重要性筛选控制Token消耗，允许在同一会话窗口持续对话数周81% similarUnverifiedCodex内置自动压缩机制，当上下文快满时会自动将长对话整理成精简摘要腾出空间77% similarUnverifiedCodex现在支持自动压缩会话功能，通过摘要算法将历史对话提炼为关键信息，在不丢失核心上下文的前提下释放窗口空间77% similarUnverified当上下文满载时，Codex会自动压缩，清理不重要的信息以继续工作70% similarUnverified上下文压缩的核心思路是在保留关键信息的前提下对历史上下文进行精简或摘要，从而减少每次请求携带的Token量70% similar
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