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
This claim has expired. It is kept for the record and no longer describes the current state.
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
Related Claims
UnverifiedCodex has a built-in automatic compression feature for historical context that controls token consumption through summarization and importance filtering, allowing continuous conversation within the same session window for weeks.81% similarUnverifiedCodex has a built-in automatic compression mechanism that automatically organizes long conversations into concise summaries to free up space when the context is nearly full.77% similarUnverifiedCodex now supports automatic session compression, which uses a summarization algorithm to distill conversation history into key information, freeing up window space without losing core context.77% similarUnverifiedWhen the context is full, Codex automatically compresses and clears unimportant information to continue working.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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