Gemini 3 Flash vs Llama 3.1 405B

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

Quick Verdict

Both models are tied with an overall score of 58.

Knowledge

Llama 3.1 405B

Gemini 3 Flash

67.8

Llama 3.1 405B

68.5

70
MMLU
70
69
GPQA
70
67
SuperGPQA
68
65
OpenBookQA
66

Coding

Tie

Gemini 3 Flash

62

Llama 3.1 405B

62

62
HumanEval
62

Mathematics

Tie

Gemini 3 Flash

69

Llama 3.1 405B

69

70
AIME 2023
70
72
AIME 2024
72
71
AIME 2025
71
66
HMMT Feb 2023
66
68
HMMT Feb 2024
68
67
HMMT Feb 2025
67
69
BRUMO 2025
69

Reasoning

Llama 3.1 405B

Gemini 3 Flash

66

Llama 3.1 405B

67

67
SimpleQA
68
65
MuSR
66

Frequently Asked Questions

Which is better, Gemini 3 Flash or Llama 3.1 405B?

Gemini 3 Flash and Llama 3.1 405B are tied with identical overall scores of 58.

Which is better for knowledge tasks, Gemini 3 Flash or Llama 3.1 405B?

Llama 3.1 405B leads in knowledge tasks with an average score of 68.5 vs 67.8.

Which is better for coding, Gemini 3 Flash or Llama 3.1 405B?

Gemini 3 Flash and Llama 3.1 405B are tied for coding with average scores of 62.

Which is better for math, Gemini 3 Flash or Llama 3.1 405B?

Gemini 3 Flash and Llama 3.1 405B are tied for math with average scores of 69.

Which is better for reasoning, Gemini 3 Flash or Llama 3.1 405B?

Llama 3.1 405B leads in reasoning with an average score of 67 vs 66.