benchlm.ai

GLM-5 vs GPT-5.1-Codex-Max

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

Quick Verdict

GPT-5.1-Codex-Max wins overall with a score of 77 vs 68 (9 point difference).GPT-5.1-Codex-Max wins 4 out of 4 categories.

GLM-5

CreatorZhipu AI
TypeOpen Weight
Context200K
Score68

GPT-5.1-Codex-Max

CreatorOpenAI
TypeProprietary
Context400K
Score77

Knowledge

GPT-5.1-Codex-Max

GLM-5

85

GPT-5.1-Codex-Max

95

88
MMLU
98
86
GPQA
96
84
SuperGPQA
94
82
OpenBookQA
92

Coding

GPT-5.1-Codex-Max

GLM-5

80

GPT-5.1-Codex-Max

94

80
HumanEval
94

Mathematics

GPT-5.1-Codex-Max

GLM-5

87

GPT-5.1-Codex-Max

97.1

88
AIME 2023
99
90
AIME 2024
99
89
AIME 2025
98
84
HMMT Feb 2023
95
86
HMMT Feb 2024
97
85
HMMT Feb 2025
96
87
BRUMO 2025
96

Reasoning

GPT-5.1-Codex-Max

GLM-5

83

GPT-5.1-Codex-Max

93

84
SimpleQA
94
82
MuSR
92

Frequently Asked Questions

Which is better, GLM-5 or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max scores higher overall with 77 vs 68, a difference of 9 points across all benchmarks.

Which is better for knowledge tasks, GLM-5 or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max leads in knowledge tasks with an average score of 95 vs 85.

Which is better for coding, GLM-5 or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max leads in coding with an average score of 94 vs 80.

Which is better for math, GLM-5 or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max leads in math with an average score of 97.1 vs 87.

Which is better for reasoning, GLM-5 or GPT-5.1-Codex-Max?

GPT-5.1-Codex-Max leads in reasoning with an average score of 93 vs 83.

Related Comparisons

GLM-5 vs GPT-5.4GLM-5 vs Gemini 3.1 ProGLM-5 vs Claude Opus 4.6GLM-5 vs GPT-5.3 CodexGLM-5 vs Grok 4.1GLM-5 vs GPT-5.2