Unverified50% confidenceDecision RuleExact time
Anthropic officially does not recommend using max reasoning mode on Sonnet 5.5, because the model tends to run too long, do work beyond what is needed, and even contradict itself.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/12/2026
First Seen
Valid until: 1/10/2027
Sources
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