benchlm.ai

GLM-4.5-Air vs Grok 4.1 Fast

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

Quick Verdict

Grok 4.1 Fast wins overall with a score of 73 vs 26 (47 point difference).Grok 4.1 Fast wins 4 out of 4 categories.

GLM-4.5-Air

CreatorTsinghua
TypeProprietary
Context128K
Score26

Grok 4.1 Fast

CreatorxAI
TypeProprietary
Context2M
Score73

Knowledge

Grok 4.1 Fast

GLM-4.5-Air

32.8

Grok 4.1 Fast

91

35
MMLU
94
34
GPQA
92
32
SuperGPQA
90
30
OpenBookQA
88

Coding

Grok 4.1 Fast

GLM-4.5-Air

27

Grok 4.1 Fast

86

27
HumanEval
86

Mathematics

Grok 4.1 Fast

GLM-4.5-Air

34

Grok 4.1 Fast

95

35
AIME 2023
96
37
AIME 2024
98
36
AIME 2025
97
31
HMMT Feb 2023
92
33
HMMT Feb 2024
94
32
HMMT Feb 2025
93
34
BRUMO 2025
95

Reasoning

Grok 4.1 Fast

GLM-4.5-Air

32

Grok 4.1 Fast

89

33
SimpleQA
90
31
MuSR
88

Frequently Asked Questions

Which is better, GLM-4.5-Air or Grok 4.1 Fast?

Grok 4.1 Fast scores higher overall with 73 vs 26, a difference of 47 points across all benchmarks.

Which is better for knowledge tasks, GLM-4.5-Air or Grok 4.1 Fast?

Grok 4.1 Fast leads in knowledge tasks with an average score of 91 vs 32.8.

Which is better for coding, GLM-4.5-Air or Grok 4.1 Fast?

Grok 4.1 Fast leads in coding with an average score of 86 vs 27.

Which is better for math, GLM-4.5-Air or Grok 4.1 Fast?

Grok 4.1 Fast leads in math with an average score of 95 vs 34.

Which is better for reasoning, GLM-4.5-Air or Grok 4.1 Fast?

Grok 4.1 Fast leads in reasoning with an average score of 89 vs 32.

Related Comparisons

GLM-4.5-Air vs GPT-5.4GLM-4.5-Air vs Gemini 3.1 ProGLM-4.5-Air vs Claude Opus 4.6GLM-4.5-Air vs GPT-5.3 CodexGLM-4.5-Air vs Grok 4.1GLM-4.5-Air vs GPT-5.2