Unverified50% confidenceSolutionExact time
In long conversations, Opus 5.5 sometimes goes back to reconsider previous answers, and this can be addressed by using project instructions to tell it to treat already-answered content as finalized in order to maintain focus.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/7/2026
First Seen
Valid until: 1/5/2027
Sources
Related Entities
Related Claims
UnverifiedClaude Opus 5.5's thinking process is always on and cannot be fully disabled; to save tokens, the effort level should be lowered rather than thinking turned off.71% similarUnverifiedOpus 5's default user-facing responses are longer than those of previous Opus models.70% similarUnverifiedIn a comparison using the same codebase, same prompt, and same high reasoning intensity, Opus 5.5 delivered the core information in a single paragraph, while Opus 5 produced an overly lengthy final answer after laying out its reasoning steps.66% similarUnverifiedOpus 5对高风险请求可能被分类器拦截或触发回退机制65% similarUnverifiedReasoning models exhibit overthinking at excessively high effort levels, causing them to overturn originally correct answers, and a similar pattern has been observed in Anthropic's Opus 5.65% similar
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