benchlm.ai

Claude 3.5 Sonnet vs Kimi K2

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

Quick Verdict

Claude 3.5 Sonnet wins overall with a score of 55 vs 23 (32 point difference).Claude 3.5 Sonnet wins 4 out of 4 categories.

Claude 3.5 Sonnet

CreatorAnthropic
TypeProprietary
Context200K
Score55

Kimi K2

CreatorMoonshot AI
TypeProprietary
Context128K
Score23

Knowledge

Claude 3.5 Sonnet

Claude 3.5 Sonnet

63.5

Kimi K2

29.8

65
MMLU
32
65
GPQA
31
63
SuperGPQA
29
61
OpenBookQA
27

Coding

Claude 3.5 Sonnet

Claude 3.5 Sonnet

57

Kimi K2

24

57
HumanEval
24

Mathematics

Claude 3.5 Sonnet

Claude 3.5 Sonnet

64

Kimi K2

31

65
AIME 2023
32
67
AIME 2024
34
66
AIME 2025
33
61
HMMT Feb 2023
28
63
HMMT Feb 2024
30
62
HMMT Feb 2025
29
64
BRUMO 2025
31

Reasoning

Claude 3.5 Sonnet

Claude 3.5 Sonnet

62

Kimi K2

29

63
SimpleQA
30
61
MuSR
28

Frequently Asked Questions

Which is better, Claude 3.5 Sonnet or Kimi K2?

Claude 3.5 Sonnet scores higher overall with 55 vs 23, a difference of 32 points across all benchmarks.

Which is better for knowledge tasks, Claude 3.5 Sonnet or Kimi K2?

Claude 3.5 Sonnet leads in knowledge tasks with an average score of 63.5 vs 29.8.

Which is better for coding, Claude 3.5 Sonnet or Kimi K2?

Claude 3.5 Sonnet leads in coding with an average score of 57 vs 24.

Which is better for math, Claude 3.5 Sonnet or Kimi K2?

Claude 3.5 Sonnet leads in math with an average score of 64 vs 31.

Which is better for reasoning, Claude 3.5 Sonnet or Kimi K2?

Claude 3.5 Sonnet leads in reasoning with an average score of 62 vs 29.

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