benchlm.ai

Claude 4.1 Opus vs Llama 3.1 405B

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

Quick Verdict

Claude 4.1 Opus wins overall with a score of 61 vs 58 (3 point difference).Claude 4.1 Opus wins 4 out of 4 categories.

Claude 4.1 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score61

Llama 3.1 405B

CreatorMeta
TypeOpen Weight
Context128K
Score58

Knowledge

Claude 4.1 Opus

Claude 4.1 Opus

74.5

Llama 3.1 405B

68.5

76
MMLU
70
76
GPQA
70
74
SuperGPQA
68
72
OpenBookQA
66

Coding

Claude 4.1 Opus

Claude 4.1 Opus

68

Llama 3.1 405B

62

68
HumanEval
62

Mathematics

Claude 4.1 Opus

Claude 4.1 Opus

75

Llama 3.1 405B

69

76
AIME 2023
70
78
AIME 2024
72
77
AIME 2025
71
72
HMMT Feb 2023
66
74
HMMT Feb 2024
68
73
HMMT Feb 2025
67
75
BRUMO 2025
69

Reasoning

Claude 4.1 Opus

Claude 4.1 Opus

73

Llama 3.1 405B

67

74
SimpleQA
68
72
MuSR
66

Frequently Asked Questions

Which is better, Claude 4.1 Opus or Llama 3.1 405B?

Claude 4.1 Opus scores higher overall with 61 vs 58, a difference of 3 points across all benchmarks.

Which is better for knowledge tasks, Claude 4.1 Opus or Llama 3.1 405B?

Claude 4.1 Opus leads in knowledge tasks with an average score of 74.5 vs 68.5.

Which is better for coding, Claude 4.1 Opus or Llama 3.1 405B?

Claude 4.1 Opus leads in coding with an average score of 68 vs 62.

Which is better for math, Claude 4.1 Opus or Llama 3.1 405B?

Claude 4.1 Opus leads in math with an average score of 75 vs 69.

Which is better for reasoning, Claude 4.1 Opus or Llama 3.1 405B?

Claude 4.1 Opus leads in reasoning with an average score of 73 vs 67.

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