GLM-4.5 vs o3

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

Quick Verdict

o3 wins overall with a score of 67 vs 28 (39 point difference).o3 wins 4 out of 4 categories.

Knowledge

o3

GLM-4.5

34.8

o3

85.3

37
MMLU
86
36
GPQA
87
34
SuperGPQA
85
32
OpenBookQA
83

Coding

o3

GLM-4.5

29

o3

78

29
HumanEval
78

Mathematics

o3

GLM-4.5

36

o3

87

37
AIME 2023
88
39
AIME 2024
90
38
AIME 2025
89
33
HMMT Feb 2023
84
35
HMMT Feb 2024
86
34
HMMT Feb 2025
85
36
BRUMO 2025
87

Reasoning

o3

GLM-4.5

34

o3

83

35
SimpleQA
84
33
MuSR
82

Frequently Asked Questions

Which is better, GLM-4.5 or o3?

o3 scores higher overall with 67 vs 28, a difference of 39 points across all benchmarks.

Which is better for knowledge tasks, GLM-4.5 or o3?

o3 leads in knowledge tasks with an average score of 85.3 vs 34.8.

Which is better for coding, GLM-4.5 or o3?

o3 leads in coding with an average score of 78 vs 29.

Which is better for math, GLM-4.5 or o3?

o3 leads in math with an average score of 87 vs 36.

Which is better for reasoning, GLM-4.5 or o3?

o3 leads in reasoning with an average score of 83 vs 34.