Gemma 3 27B vs Llama 3.1 405B

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

Quick Verdict

Llama 3.1 405B wins overall with a score of 58 vs 36 (22 point difference).Llama 3.1 405B wins 4 out of 4 categories.

Knowledge

Llama 3.1 405B

Gemma 3 27B

42.8

Llama 3.1 405B

68.5

45
MMLU
70
44
GPQA
70
42
SuperGPQA
68
40
OpenBookQA
66

Coding

Llama 3.1 405B

Gemma 3 27B

37

Llama 3.1 405B

62

37
HumanEval
62

Mathematics

Llama 3.1 405B

Gemma 3 27B

44

Llama 3.1 405B

69

45
AIME 2023
70
47
AIME 2024
72
46
AIME 2025
71
41
HMMT Feb 2023
66
43
HMMT Feb 2024
68
42
HMMT Feb 2025
67
44
BRUMO 2025
69

Reasoning

Llama 3.1 405B

Gemma 3 27B

42

Llama 3.1 405B

67

43
SimpleQA
68
41
MuSR
66

Frequently Asked Questions

Which is better, Gemma 3 27B or Llama 3.1 405B?

Llama 3.1 405B scores higher overall with 58 vs 36, a difference of 22 points across all benchmarks.

Which is better for knowledge tasks, Gemma 3 27B or Llama 3.1 405B?

Llama 3.1 405B leads in knowledge tasks with an average score of 68.5 vs 42.8.

Which is better for coding, Gemma 3 27B or Llama 3.1 405B?

Llama 3.1 405B leads in coding with an average score of 62 vs 37.

Which is better for math, Gemma 3 27B or Llama 3.1 405B?

Llama 3.1 405B leads in math with an average score of 69 vs 44.

Which is better for reasoning, Gemma 3 27B or Llama 3.1 405B?

Llama 3.1 405B leads in reasoning with an average score of 67 vs 42.