Gemma 3 27B vs o3-pro

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

Quick Verdict

o3-pro wins overall with a score of 68 vs 36 (32 point difference).o3-pro wins 4 out of 4 categories.

Knowledge

o3-pro

Gemma 3 27B

42.8

o3-pro

87.3

45
MMLU
88
44
GPQA
89
42
SuperGPQA
87
40
OpenBookQA
85

Coding

o3-pro

Gemma 3 27B

37

o3-pro

80

37
HumanEval
80

Mathematics

o3-pro

Gemma 3 27B

44

o3-pro

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

o3-pro

Gemma 3 27B

42

o3-pro

85

43
SimpleQA
86
41
MuSR
84

Frequently Asked Questions

Which is better, Gemma 3 27B or o3-pro?

o3-pro 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 o3-pro?

o3-pro leads in knowledge tasks with an average score of 87.3 vs 42.8.

Which is better for coding, Gemma 3 27B or o3-pro?

o3-pro leads in coding with an average score of 80 vs 37.

Which is better for math, Gemma 3 27B or o3-pro?

o3-pro leads in math with an average score of 89 vs 44.

Which is better for reasoning, Gemma 3 27B or o3-pro?

o3-pro leads in reasoning with an average score of 85 vs 42.