benchlm.ai

Claude 4 Sonnet vs Kimi K2

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

Quick Verdict

Claude 4 Sonnet wins overall with a score of 59 vs 23 (36 point difference).Claude 4 Sonnet wins 4 out of 4 categories.

Claude 4 Sonnet

CreatorAnthropic
TypeProprietary
Context200K
Score59

Kimi K2

CreatorMoonshot AI
TypeProprietary
Context128K
Score23

Knowledge

Claude 4 Sonnet

Claude 4 Sonnet

71.5

Kimi K2

29.8

73
MMLU
32
73
GPQA
31
71
SuperGPQA
29
69
OpenBookQA
27

Coding

Claude 4 Sonnet

Claude 4 Sonnet

65

Kimi K2

24

65
HumanEval
24

Mathematics

Claude 4 Sonnet

Claude 4 Sonnet

72

Kimi K2

31

73
AIME 2023
32
75
AIME 2024
34
74
AIME 2025
33
69
HMMT Feb 2023
28
71
HMMT Feb 2024
30
70
HMMT Feb 2025
29
72
BRUMO 2025
31

Reasoning

Claude 4 Sonnet

Claude 4 Sonnet

70

Kimi K2

29

71
SimpleQA
30
69
MuSR
28

Frequently Asked Questions

Which is better, Claude 4 Sonnet or Kimi K2?

Claude 4 Sonnet scores higher overall with 59 vs 23, a difference of 36 points across all benchmarks.

Which is better for knowledge tasks, Claude 4 Sonnet or Kimi K2?

Claude 4 Sonnet leads in knowledge tasks with an average score of 71.5 vs 29.8.

Which is better for coding, Claude 4 Sonnet or Kimi K2?

Claude 4 Sonnet leads in coding with an average score of 65 vs 24.

Which is better for math, Claude 4 Sonnet or Kimi K2?

Claude 4 Sonnet leads in math with an average score of 72 vs 31.

Which is better for reasoning, Claude 4 Sonnet or Kimi K2?

Claude 4 Sonnet leads in reasoning with an average score of 70 vs 29.

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