Grok 3 [Beta] 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 33 (25 point difference).Llama 3.1 405B wins 4 out of 4 categories.

Knowledge

Llama 3.1 405B

Grok 3 [Beta]

39.8

Llama 3.1 405B

68.5

42
MMLU
70
41
GPQA
70
39
SuperGPQA
68
37
OpenBookQA
66

Coding

Llama 3.1 405B

Grok 3 [Beta]

34

Llama 3.1 405B

62

34
HumanEval
62

Mathematics

Llama 3.1 405B

Grok 3 [Beta]

41

Llama 3.1 405B

69

42
AIME 2023
70
44
AIME 2024
72
43
AIME 2025
71
38
HMMT Feb 2023
66
40
HMMT Feb 2024
68
39
HMMT Feb 2025
67
41
BRUMO 2025
69

Reasoning

Llama 3.1 405B

Grok 3 [Beta]

39

Llama 3.1 405B

67

40
SimpleQA
68
38
MuSR
66

Frequently Asked Questions

Which is better, Grok 3 [Beta] or Llama 3.1 405B?

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

Which is better for knowledge tasks, Grok 3 [Beta] or Llama 3.1 405B?

Llama 3.1 405B leads in knowledge tasks with an average score of 68.5 vs 39.8.

Which is better for coding, Grok 3 [Beta] or Llama 3.1 405B?

Llama 3.1 405B leads in coding with an average score of 62 vs 34.

Which is better for math, Grok 3 [Beta] or Llama 3.1 405B?

Llama 3.1 405B leads in math with an average score of 69 vs 41.

Which is better for reasoning, Grok 3 [Beta] or Llama 3.1 405B?

Llama 3.1 405B leads in reasoning with an average score of 67 vs 39.