Unverified50% confidenceFactExact time
Mainstream AI agents replace original conversations with summaries through summarization/compaction when the context approaches the window limit, with Claude Code, Codex, and others triggering compaction at 75% of the window.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/5/2026
First Seen
Valid until: 1/3/2027
Sources
Related Entities
Related Claims
UnverifiedCompaction refers to the framework automatically condensing earlier conversations into summaries or removing redundant content to free up space when session messages exceed the model's context window limit.70% similarUnverifiedCodex 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.69% similarUnverifiedContext compaction is a class of techniques that distill existing conversation history into a more concise representation, typically by having the model generate a summary of earlier content to replace the original message list.69% similar
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