GLM-4.5-Air vs GPT-4.1 mini

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

GLM-4.5-Air has the cleaner overall profile here, landing at 37 versus 35. It is a real lead, but still close enough that category-level strengths matter more than the headline number.

GLM-4.5-Air's sharpest advantage is in mathematics, where it averages 36.9 against 23.1. The single biggest benchmark swing on the page is MMLU, 35 to 87.5. GPT-4.1 mini does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.

GPT-4.1 mini gives you the larger context window at 1M, compared with 128K for GLM-4.5-Air.

Quick Verdict

Pick GLM-4.5-Air if you want the stronger benchmark profile. GPT-4.1 mini only becomes the better choice if knowledge is the priority or you need the larger 1M context window.

Knowledge

GPT-4.1 mini

GLM-4.5-Air

31

GPT-4.1 mini

75.9

35
MMLU
87.5
34
GPQA
64.2
32
SuperGPQA
-
30
OpenBookQA
-
51
MMLU-Pro
-
4
HLE
-

Coding

GPT-4.1 mini

GLM-4.5-Air

19

GPT-4.1 mini

23.6

27
HumanEval
-
15
SWE-bench Verified
23.6
15
LiveCodeBench
-

Mathematics

GLM-4.5-Air

GLM-4.5-Air

36.9

GPT-4.1 mini

23.1

35
AIME 2023
-
37
AIME 2024
23.1
36
AIME 2025
-
31
HMMT Feb 2023
-
33
HMMT Feb 2024
-
32
HMMT Feb 2025
-
34
BRUMO 2025
-
57
MATH-500
-

Reasoning

GLM-4.5-Air
33
SimpleQA
-
31
MuSR
-
63
BBH
-

Instruction Following

GPT-4.1 mini

GLM-4.5-Air

68

GPT-4.1 mini

88.5

68
IFEval
88.5

Multilingual

GLM-4.5-Air
63
MGSM
-

Frequently Asked Questions

Which is better, GLM-4.5-Air or GPT-4.1 mini?

GLM-4.5-Air is ahead overall, 37 to 35. The biggest single separator in this matchup is MMLU, where the scores are 35 and 87.5.

Which is better for knowledge tasks, GLM-4.5-Air or GPT-4.1 mini?

GPT-4.1 mini has the edge for knowledge tasks in this comparison, averaging 75.9 versus 31. Inside this category, MMLU is the benchmark that creates the most daylight between them.

Which is better for coding, GLM-4.5-Air or GPT-4.1 mini?

GPT-4.1 mini has the edge for coding in this comparison, averaging 23.6 versus 19. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for math, GLM-4.5-Air or GPT-4.1 mini?

GLM-4.5-Air has the edge for math in this comparison, averaging 36.9 versus 23.1. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.

Which is better for instruction following, GLM-4.5-Air or GPT-4.1 mini?

GPT-4.1 mini has the edge for instruction following in this comparison, averaging 88.5 versus 68. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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