Unverified50% confidenceSolutionExact time
In coding tests, Opus 5.5 performs best at the medium reasoning level, with score drops occurring at the high and ultra-high levels.
1
Sources
50%
Confidence
Long-term
Relevance
9/29/2026
First Seen
Sources
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Related Claims
UnverifiedOn deep code review tasks, Grok 4.7 and Sol outperform Opus and Fable, but Opus's improvement on that bench from 5 to 5.5 is close to doubling.66% similarUnverifiedGLM-5.3的智能体编程准确率随投入词元增加而提升：低投入约24.7，高投入31.5，最大投入34.765% similarUnverifiedAnthropic officially describes Opus 5.5 as the highest-performing model it has tested to date.64% similar
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