Unverified60% confidenceFactExact time
Codex's default context capacity is 200,000 tokens; once exceeded, it will be automatically compressed, and compression will degrade task execution performance.
2
Sources
60%
Confidence
Medium-term (~90 days)
Relevance
9/18/2026
First Seen
Valid until: 12/17/2026
Sources
Related Entities
Related Claims
UnverifiedThe Codex context compression strategy performs mild cleanup at 60% usage and deep compression at 85% usage, while preserving the most recent turns and the original system instructions.71% similarUnverifiedThe schema projection layer compresses a 4800-token bank response payload to 48 tokens, achieving a 99% reduction in token consumption without losing decision accuracy.67% similarUnverifiedIn context engineering, conversation summary compression can compress a 747-token conversation to about 280 tokens, a compression rate exceeding 26%.67% similarUnverifiedThe Codex configuration option project_doc_max_bytes defaults to 32 KiB and limits the total byte count after the instruction chain is merged; when the threshold is exceeded, subsequent files stop loading and a truncation notice may be logged.66% similarUnverifiedUnder the old estimation logic, a roughly 90 KB screenshot would be counted as about 30k tokens, causing automatic compaction to be triggered prematurely when images are pasted frequently.66% similar
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