GLM-4.5 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 28 (28 point difference).GPT-4o wins 4 out of 4 categories.

Knowledge

GPT-4o

GLM-4.5

34.8

GPT-4o

64.5

37
MMLU
66
36
GPQA
66
34
SuperGPQA
64
32
OpenBookQA
62

Coding

GPT-4o

GLM-4.5

29

GPT-4o

58

29
HumanEval
58

Mathematics

GPT-4o

GLM-4.5

36

GPT-4o

65

37
AIME 2023
66
39
AIME 2024
68
38
AIME 2025
67
33
HMMT Feb 2023
62
35
HMMT Feb 2024
64
34
HMMT Feb 2025
63
36
BRUMO 2025
65

Reasoning

GPT-4o

GLM-4.5

34

GPT-4o

63

35
SimpleQA
64
33
MuSR
62

Frequently Asked Questions

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

GPT-4o scores higher overall with 56 vs 28, a difference of 28 points across all benchmarks.

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

GPT-4o leads in knowledge tasks with an average score of 64.5 vs 34.8.

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

GPT-4o leads in coding with an average score of 58 vs 29.

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

GPT-4o leads in math with an average score of 65 vs 36.

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

GPT-4o leads in reasoning with an average score of 63 vs 34.