Gemma 3 27B vs o3

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

Quick Verdict

o3 wins overall with a score of 67 vs 36 (31 point difference).o3 wins 4 out of 4 categories.

Knowledge

o3

Gemma 3 27B

42.8

o3

85.3

45
MMLU
86
44
GPQA
87
42
SuperGPQA
85
40
OpenBookQA
83

Coding

o3

Gemma 3 27B

37

o3

78

37
HumanEval
78

Mathematics

o3

Gemma 3 27B

44

o3

87

45
AIME 2023
88
47
AIME 2024
90
46
AIME 2025
89
41
HMMT Feb 2023
84
43
HMMT Feb 2024
86
42
HMMT Feb 2025
85
44
BRUMO 2025
87

Reasoning

o3

Gemma 3 27B

42

o3

83

43
SimpleQA
84
41
MuSR
82

Frequently Asked Questions

Which is better, Gemma 3 27B or o3?

o3 scores higher overall with 67 vs 36, a difference of 31 points across all benchmarks.

Which is better for knowledge tasks, Gemma 3 27B or o3?

o3 leads in knowledge tasks with an average score of 85.3 vs 42.8.

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

o3 leads in coding with an average score of 78 vs 37.

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

o3 leads in math with an average score of 87 vs 44.

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

o3 leads in reasoning with an average score of 83 vs 42.