Claude Opus thinks for over 10 minutes and breaks down on specific prompt

Kyrannio · x · 2026-07-30

A user reported that when testing a specific prompt, Claude Opus exhibited abnormal chain of thought. The model thought for over 10 minutes, with its reasoning process transitioning from normal to highly bizarre, ultimately disconnecting in an incognito chat.

Related event: Specific Prompts Trigger Claude Opus Abnormal Completion and CoT Leakage(10 posts)→

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