benchlm.ai

Claude 4 Sonnet vs Llama 3.1 405B

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

Quick Verdict

Claude 4 Sonnet wins overall with a score of 59 vs 58 (1 point difference).Claude 4 Sonnet wins 4 out of 4 categories.

Claude 4 Sonnet

CreatorAnthropic
TypeProprietary
Context200K
Score59

Llama 3.1 405B

CreatorMeta
TypeOpen Weight
Context128K
Score58

Knowledge

Claude 4 Sonnet

Claude 4 Sonnet

71.5

Llama 3.1 405B

68.5

73
MMLU
70
73
GPQA
70
71
SuperGPQA
68
69
OpenBookQA
66

Coding

Claude 4 Sonnet

Claude 4 Sonnet

65

Llama 3.1 405B

62

65
HumanEval
62

Mathematics

Claude 4 Sonnet

Claude 4 Sonnet

72

Llama 3.1 405B

69

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

Reasoning

Claude 4 Sonnet

Claude 4 Sonnet

70

Llama 3.1 405B

67

71
SimpleQA
68
69
MuSR
66

Frequently Asked Questions

Which is better, Claude 4 Sonnet or Llama 3.1 405B?

Claude 4 Sonnet scores higher overall with 59 vs 58, a difference of 1 points across all benchmarks.

Which is better for knowledge tasks, Claude 4 Sonnet or Llama 3.1 405B?

Claude 4 Sonnet leads in knowledge tasks with an average score of 71.5 vs 68.5.

Which is better for coding, Claude 4 Sonnet or Llama 3.1 405B?

Claude 4 Sonnet leads in coding with an average score of 65 vs 62.

Which is better for math, Claude 4 Sonnet or Llama 3.1 405B?

Claude 4 Sonnet leads in math with an average score of 72 vs 69.

Which is better for reasoning, Claude 4 Sonnet or Llama 3.1 405B?

Claude 4 Sonnet leads in reasoning with an average score of 70 vs 67.

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