benchlm.ai

Claude Sonnet 4.5 vs GLM-4.5-Air

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

Quick Verdict

Claude Sonnet 4.5 wins overall with a score of 74 vs 26 (48 point difference).Claude Sonnet 4.5 wins 4 out of 4 categories.

Claude Sonnet 4.5

CreatorAnthropic
TypeProprietary
Context1M
Score74

GLM-4.5-Air

CreatorTsinghua
TypeProprietary
Context128K
Score26

Knowledge

Claude Sonnet 4.5

Claude Sonnet 4.5

92

GLM-4.5-Air

32.8

95
MMLU
35
93
GPQA
34
91
SuperGPQA
32
89
OpenBookQA
30

Coding

Claude Sonnet 4.5

Claude Sonnet 4.5

87

GLM-4.5-Air

27

87
HumanEval
27

Mathematics

Claude Sonnet 4.5

Claude Sonnet 4.5

96

GLM-4.5-Air

34

97
AIME 2023
35
99
AIME 2024
37
98
AIME 2025
36
93
HMMT Feb 2023
31
95
HMMT Feb 2024
33
94
HMMT Feb 2025
32
96
BRUMO 2025
34

Reasoning

Claude Sonnet 4.5

Claude Sonnet 4.5

90

GLM-4.5-Air

32

91
SimpleQA
33
89
MuSR
31

Frequently Asked Questions

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

Claude Sonnet 4.5 scores higher overall with 74 vs 26, a difference of 48 points across all benchmarks.

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

Claude Sonnet 4.5 leads in knowledge tasks with an average score of 92 vs 32.8.

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

Claude Sonnet 4.5 leads in coding with an average score of 87 vs 27.

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

Claude Sonnet 4.5 leads in math with an average score of 96 vs 34.

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

Claude Sonnet 4.5 leads in reasoning with an average score of 90 vs 32.

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