GLM-5 (Reasoning) 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 75 (1 point difference).GPT-5.1 wins 4 out of 4 categories.

Knowledge

GPT-5.1

GLM-5 (Reasoning)

93

GPT-5.1

94

96
MMLU
97
94
GPQA
95
92
SuperGPQA
93
90
OpenBookQA
91

Coding

GPT-5.1

GLM-5 (Reasoning)

88

GPT-5.1

89

88
HumanEval
89

Mathematics

GPT-5.1

GLM-5 (Reasoning)

96.6

GPT-5.1

97.1

98
AIME 2023
99
99
AIME 2024
99
98
AIME 2025
98
94
HMMT Feb 2023
95
96
HMMT Feb 2024
97
95
HMMT Feb 2025
96
96
BRUMO 2025
96

Reasoning

GPT-5.1

GLM-5 (Reasoning)

91

GPT-5.1

92

92
SimpleQA
93
90
MuSR
91

Frequently Asked Questions

Which is better, GLM-5 (Reasoning) or GPT-5.1?

GPT-5.1 scores higher overall with 76 vs 75, a difference of 1 points across all benchmarks.

Which is better for knowledge tasks, GLM-5 (Reasoning) or GPT-5.1?

GPT-5.1 leads in knowledge tasks with an average score of 94 vs 93.

Which is better for coding, GLM-5 (Reasoning) or GPT-5.1?

GPT-5.1 leads in coding with an average score of 89 vs 88.

Which is better for math, GLM-5 (Reasoning) or GPT-5.1?

GPT-5.1 leads in math with an average score of 97.1 vs 96.6.

Which is better for reasoning, GLM-5 (Reasoning) or GPT-5.1?

GPT-5.1 leads in reasoning with an average score of 92 vs 91.