Gemma 3 27B vs GPT-5 mini

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

Quick Verdict

GPT-5 mini wins overall with a score of 68 vs 36 (32 point difference).GPT-5 mini wins 4 out of 4 categories.

Knowledge

GPT-5 mini

Gemma 3 27B

42.8

GPT-5 mini

85

45
MMLU
88
44
GPQA
86
42
SuperGPQA
84
40
OpenBookQA
82

Coding

GPT-5 mini

Gemma 3 27B

37

GPT-5 mini

80

37
HumanEval
80

Mathematics

GPT-5 mini

Gemma 3 27B

44

GPT-5 mini

89

45
AIME 2023
90
47
AIME 2024
92
46
AIME 2025
91
41
HMMT Feb 2023
86
43
HMMT Feb 2024
88
42
HMMT Feb 2025
87
44
BRUMO 2025
89

Reasoning

GPT-5 mini

Gemma 3 27B

42

GPT-5 mini

83

43
SimpleQA
84
41
MuSR
82

Frequently Asked Questions

Which is better, Gemma 3 27B or GPT-5 mini?

GPT-5 mini scores higher overall with 68 vs 36, a difference of 32 points across all benchmarks.

Which is better for knowledge tasks, Gemma 3 27B or GPT-5 mini?

GPT-5 mini leads in knowledge tasks with an average score of 85 vs 42.8.

Which is better for coding, Gemma 3 27B or GPT-5 mini?

GPT-5 mini leads in coding with an average score of 80 vs 37.

Which is better for math, Gemma 3 27B or GPT-5 mini?

GPT-5 mini leads in math with an average score of 89 vs 44.

Which is better for reasoning, Gemma 3 27B or GPT-5 mini?

GPT-5 mini leads in reasoning with an average score of 83 vs 42.