GLM-4.5-Air vs GPT-5.1

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

Quick Verdict

GPT-5.1 wins overall with a score of 76 vs 26 (50 point difference).GPT-5.1 wins 4 out of 4 categories.

Knowledge

GPT-5.1

GLM-4.5-Air

32.8

GPT-5.1

94

35
MMLU
97
34
GPQA
95
32
SuperGPQA
93
30
OpenBookQA
91

Coding

GPT-5.1

GLM-4.5-Air

27

GPT-5.1

89

27
HumanEval
89

Mathematics

GPT-5.1

GLM-4.5-Air

34

GPT-5.1

97.1

35
AIME 2023
99
37
AIME 2024
99
36
AIME 2025
98
31
HMMT Feb 2023
95
33
HMMT Feb 2024
97
32
HMMT Feb 2025
96
34
BRUMO 2025
96

Reasoning

GPT-5.1

GLM-4.5-Air

32

GPT-5.1

92

33
SimpleQA
93
31
MuSR
91

Frequently Asked Questions

Which is better, GLM-4.5-Air or GPT-5.1?

GPT-5.1 scores higher overall with 76 vs 26, a difference of 50 points across all benchmarks.

Which is better for knowledge tasks, GLM-4.5-Air or GPT-5.1?

GPT-5.1 leads in knowledge tasks with an average score of 94 vs 32.8.

Which is better for coding, GLM-4.5-Air or GPT-5.1?

GPT-5.1 leads in coding with an average score of 89 vs 27.

Which is better for math, GLM-4.5-Air or GPT-5.1?

GPT-5.1 leads in math with an average score of 97.1 vs 34.

Which is better for reasoning, GLM-4.5-Air or GPT-5.1?

GPT-5.1 leads in reasoning with an average score of 92 vs 32.