benchlm.ai

Claude Opus 4.5 vs GLM-4.5-Air

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 26 (53 point difference).Claude Opus 4.5 wins 4 out of 4 categories.

Claude Opus 4.5

CreatorAnthropic
TypeProprietary
Context200K
Score79

GLM-4.5-Air

CreatorTsinghua
TypeProprietary
Context128K
Score26

Knowledge

Claude Opus 4.5

Claude Opus 4.5

96

GLM-4.5-Air

32.8

99
MMLU
35
97
GPQA
34
95
SuperGPQA
32
93
OpenBookQA
30

Coding

Claude Opus 4.5

Claude Opus 4.5

91

GLM-4.5-Air

27

91
HumanEval
27

Mathematics

Claude Opus 4.5

Claude Opus 4.5

97.1

GLM-4.5-Air

34

99
AIME 2023
35
99
AIME 2024
37
98
AIME 2025
36
95
HMMT Feb 2023
31
97
HMMT Feb 2024
33
96
HMMT Feb 2025
32
96
BRUMO 2025
34

Reasoning

Claude Opus 4.5

Claude Opus 4.5

94

GLM-4.5-Air

32

95
SimpleQA
33
93
MuSR
31

Frequently Asked Questions

Which is better, Claude Opus 4.5 or GLM-4.5-Air?

Claude Opus 4.5 scores higher overall with 79 vs 26, a difference of 53 points across all benchmarks.

Which is better for knowledge tasks, Claude Opus 4.5 or GLM-4.5-Air?

Claude Opus 4.5 leads in knowledge tasks with an average score of 96 vs 32.8.

Which is better for coding, Claude Opus 4.5 or GLM-4.5-Air?

Claude Opus 4.5 leads in coding with an average score of 91 vs 27.

Which is better for math, Claude Opus 4.5 or GLM-4.5-Air?

Claude Opus 4.5 leads in math with an average score of 97.1 vs 34.

Which is better for reasoning, Claude Opus 4.5 or GLM-4.5-Air?

Claude Opus 4.5 leads in reasoning with an average score of 94 vs 32.

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