GLM-4.5-Air vs GPT-4o

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

Quick Verdict

GPT-4o wins overall with a score of 56 vs 26 (30 point difference).GPT-4o wins 4 out of 4 categories.

Knowledge

GPT-4o

GLM-4.5-Air

32.8

GPT-4o

64.5

35
MMLU
66
34
GPQA
66
32
SuperGPQA
64
30
OpenBookQA
62

Coding

GPT-4o

GLM-4.5-Air

27

GPT-4o

58

27
HumanEval
58

Mathematics

GPT-4o

GLM-4.5-Air

34

GPT-4o

65

35
AIME 2023
66
37
AIME 2024
68
36
AIME 2025
67
31
HMMT Feb 2023
62
33
HMMT Feb 2024
64
32
HMMT Feb 2025
63
34
BRUMO 2025
65

Reasoning

GPT-4o

GLM-4.5-Air

32

GPT-4o

63

33
SimpleQA
64
31
MuSR
62

Frequently Asked Questions

Which is better, GLM-4.5-Air or GPT-4o?

GPT-4o scores higher overall with 56 vs 26, a difference of 30 points across all benchmarks.

Which is better for knowledge tasks, GLM-4.5-Air or GPT-4o?

GPT-4o leads in knowledge tasks with an average score of 64.5 vs 32.8.

Which is better for coding, GLM-4.5-Air or GPT-4o?

GPT-4o leads in coding with an average score of 58 vs 27.

Which is better for math, GLM-4.5-Air or GPT-4o?

GPT-4o leads in math with an average score of 65 vs 34.

Which is better for reasoning, GLM-4.5-Air or GPT-4o?

GPT-4o leads in reasoning with an average score of 63 vs 32.