DeepSeek V3.1 (Reasoning) 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 25 (33 point difference).Llama 3.1 405B wins 4 out of 4 categories.

Knowledge

Llama 3.1 405B

DeepSeek V3.1 (Reasoning)

31.8

Llama 3.1 405B

68.5

34
MMLU
70
33
GPQA
70
31
SuperGPQA
68
29
OpenBookQA
66

Coding

Llama 3.1 405B

DeepSeek V3.1 (Reasoning)

26

Llama 3.1 405B

62

26
HumanEval
62

Mathematics

Llama 3.1 405B

DeepSeek V3.1 (Reasoning)

33

Llama 3.1 405B

69

34
AIME 2023
70
36
AIME 2024
72
35
AIME 2025
71
30
HMMT Feb 2023
66
32
HMMT Feb 2024
68
31
HMMT Feb 2025
67
33
BRUMO 2025
69

Reasoning

Llama 3.1 405B

DeepSeek V3.1 (Reasoning)

31

Llama 3.1 405B

67

32
SimpleQA
68
30
MuSR
66

Frequently Asked Questions

Which is better, DeepSeek V3.1 (Reasoning) or Llama 3.1 405B?

Llama 3.1 405B scores higher overall with 58 vs 25, a difference of 33 points across all benchmarks.

Which is better for knowledge tasks, DeepSeek V3.1 (Reasoning) or Llama 3.1 405B?

Llama 3.1 405B leads in knowledge tasks with an average score of 68.5 vs 31.8.

Which is better for coding, DeepSeek V3.1 (Reasoning) or Llama 3.1 405B?

Llama 3.1 405B leads in coding with an average score of 62 vs 26.

Which is better for math, DeepSeek V3.1 (Reasoning) or Llama 3.1 405B?

Llama 3.1 405B leads in math with an average score of 69 vs 33.

Which is better for reasoning, DeepSeek V3.1 (Reasoning) or Llama 3.1 405B?

Llama 3.1 405B leads in reasoning with an average score of 67 vs 31.