Unverified50% confidenceFactExact time
Claude 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.
1
Sources
50%
Confidence
Medium-term (~90 days)
Relevance
10/5/2026
First Seen
Valid until: 1/3/2027
Sources
Related Entities
Related Claims
UnverifiedThe context window of the latest Opus 5.5 checkpoint is slightly reduced compared to before, reflecting Anthropic's strategic focus on improving efficiency and reducing costs rather than expanding the context window.64% 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 5.64% similarUnverifiedThe Max mode mechanism differs from other tiers in that it removes the "think less" option, forcing the model to use the full thinking token budget.63% similar
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