Gemini 2.5 Flash 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 41 (17 point difference).Llama 3.1 405B wins 4 out of 4 categories.

Knowledge

Llama 3.1 405B

Gemini 2.5 Flash

47.8

Llama 3.1 405B

68.5

50
MMLU
70
49
GPQA
70
47
SuperGPQA
68
45
OpenBookQA
66

Coding

Llama 3.1 405B

Gemini 2.5 Flash

42

Llama 3.1 405B

62

42
HumanEval
62

Mathematics

Llama 3.1 405B

Gemini 2.5 Flash

49

Llama 3.1 405B

69

50
AIME 2023
70
52
AIME 2024
72
51
AIME 2025
71
46
HMMT Feb 2023
66
48
HMMT Feb 2024
68
47
HMMT Feb 2025
67
49
BRUMO 2025
69

Reasoning

Llama 3.1 405B

Gemini 2.5 Flash

47

Llama 3.1 405B

67

48
SimpleQA
68
46
MuSR
66

Frequently Asked Questions

Which is better, Gemini 2.5 Flash or Llama 3.1 405B?

Llama 3.1 405B scores higher overall with 58 vs 41, a difference of 17 points across all benchmarks.

Which is better for knowledge tasks, Gemini 2.5 Flash or Llama 3.1 405B?

Llama 3.1 405B leads in knowledge tasks with an average score of 68.5 vs 47.8.

Which is better for coding, Gemini 2.5 Flash or Llama 3.1 405B?

Llama 3.1 405B leads in coding with an average score of 62 vs 42.

Which is better for math, Gemini 2.5 Flash or Llama 3.1 405B?

Llama 3.1 405B leads in math with an average score of 69 vs 49.

Which is better for reasoning, Gemini 2.5 Flash or Llama 3.1 405B?

Llama 3.1 405B leads in reasoning with an average score of 67 vs 47.