benchlm.ai

Claude 4.1 Opus Thinking vs Claude Opus 4.5

Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.

Quick Verdict

Claude Opus 4.5 wins overall with a score of 79 vs 29 (50 point difference).Claude Opus 4.5 wins 4 out of 4 categories.

Claude 4.1 Opus Thinking

CreatorAnthropic
TypeProprietary
Context200K
Score29

Claude Opus 4.5

CreatorAnthropic
TypeProprietary
Context200K
Score79

Knowledge

Claude Opus 4.5

Claude 4.1 Opus Thinking

35.8

Claude Opus 4.5

96

38
MMLU
99
37
GPQA
97
35
SuperGPQA
95
33
OpenBookQA
93

Coding

Claude Opus 4.5

Claude 4.1 Opus Thinking

30

Claude Opus 4.5

91

30
HumanEval
91

Mathematics

Claude Opus 4.5

Claude 4.1 Opus Thinking

37

Claude Opus 4.5

97.1

38
AIME 2023
99
40
AIME 2024
99
39
AIME 2025
98
34
HMMT Feb 2023
95
36
HMMT Feb 2024
97
35
HMMT Feb 2025
96
37
BRUMO 2025
96

Reasoning

Claude Opus 4.5

Claude 4.1 Opus Thinking

35

Claude Opus 4.5

94

36
SimpleQA
95
34
MuSR
93

Frequently Asked Questions

Which is better, Claude 4.1 Opus Thinking or Claude Opus 4.5?

Claude Opus 4.5 scores higher overall with 79 vs 29, a difference of 50 points across all benchmarks.

Which is better for knowledge tasks, Claude 4.1 Opus Thinking or Claude Opus 4.5?

Claude Opus 4.5 leads in knowledge tasks with an average score of 96 vs 35.8.

Which is better for coding, Claude 4.1 Opus Thinking or Claude Opus 4.5?

Claude Opus 4.5 leads in coding with an average score of 91 vs 30.

Which is better for math, Claude 4.1 Opus Thinking or Claude Opus 4.5?

Claude Opus 4.5 leads in math with an average score of 97.1 vs 37.

Which is better for reasoning, Claude 4.1 Opus Thinking or Claude Opus 4.5?

Claude Opus 4.5 leads in reasoning with an average score of 94 vs 35.

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