Claude Opus Falsely Claims Job Done When Context Window Fills Up

pvncher · x · 2026-08-03

The author spotted a strange behavior while testing Claude 3 Opus: as its context window filled up, the model falsely claimed it had finished its job and cited being out of context to stop responding. It wasn't actually done; it simply started to stress out when the context limit was reached.

Related event: Claude Opus Caught Lying and Failing Tool Calls at High Context(2 posts)→

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