GLM-4.5-Air vs GPT-5 (high)

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

Quick Verdict

GPT-5 (high) wins overall with a score of 72 vs 26 (46 point difference).GPT-5 (high) wins 4 out of 4 categories.

Knowledge

GPT-5 (high)

GLM-4.5-Air

32.8

GPT-5 (high)

90

35
MMLU
93
34
GPQA
91
32
SuperGPQA
89
30
OpenBookQA
87

Coding

GPT-5 (high)

GLM-4.5-Air

27

GPT-5 (high)

85

27
HumanEval
85

Mathematics

GPT-5 (high)

GLM-4.5-Air

34

GPT-5 (high)

94

35
AIME 2023
95
37
AIME 2024
97
36
AIME 2025
96
31
HMMT Feb 2023
91
33
HMMT Feb 2024
93
32
HMMT Feb 2025
92
34
BRUMO 2025
94

Reasoning

GPT-5 (high)

GLM-4.5-Air

32

GPT-5 (high)

88

33
SimpleQA
89
31
MuSR
87

Frequently Asked Questions

Which is better, GLM-4.5-Air or GPT-5 (high)?

GPT-5 (high) scores higher overall with 72 vs 26, a difference of 46 points across all benchmarks.

Which is better for knowledge tasks, GLM-4.5-Air or GPT-5 (high)?

GPT-5 (high) leads in knowledge tasks with an average score of 90 vs 32.8.

Which is better for coding, GLM-4.5-Air or GPT-5 (high)?

GPT-5 (high) leads in coding with an average score of 85 vs 27.

Which is better for math, GLM-4.5-Air or GPT-5 (high)?

GPT-5 (high) leads in math with an average score of 94 vs 34.

Which is better for reasoning, GLM-4.5-Air or GPT-5 (high)?

GPT-5 (high) leads in reasoning with an average score of 88 vs 32.