GLM-5 vs GPT-OSS 120B

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

Quick Verdict

GLM-5 wins overall with a score of 68 vs 42 (26 point difference).GLM-5 wins 4 out of 4 categories.

Knowledge

GLM-5

GLM-5

85

GPT-OSS 120B

48.8

88
MMLU
51
86
GPQA
50
84
SuperGPQA
48
82
OpenBookQA
46

Coding

GLM-5

GLM-5

80

GPT-OSS 120B

43

80
HumanEval
43

Mathematics

GLM-5

GLM-5

87

GPT-OSS 120B

50

88
AIME 2023
51
90
AIME 2024
53
89
AIME 2025
52
84
HMMT Feb 2023
47
86
HMMT Feb 2024
49
85
HMMT Feb 2025
48
87
BRUMO 2025
50

Reasoning

GLM-5

GLM-5

83

GPT-OSS 120B

48

84
SimpleQA
49
82
MuSR
47

Frequently Asked Questions

Which is better, GLM-5 or GPT-OSS 120B?

GLM-5 scores higher overall with 68 vs 42, a difference of 26 points across all benchmarks.

Which is better for knowledge tasks, GLM-5 or GPT-OSS 120B?

GLM-5 leads in knowledge tasks with an average score of 85 vs 48.8.

Which is better for coding, GLM-5 or GPT-OSS 120B?

GLM-5 leads in coding with an average score of 80 vs 43.

Which is better for math, GLM-5 or GPT-OSS 120B?

GLM-5 leads in math with an average score of 87 vs 50.

Which is better for reasoning, GLM-5 or GPT-OSS 120B?

GLM-5 leads in reasoning with an average score of 83 vs 48.