benchlm.ai

Claude 4 Sonnet vs Kimi K2.5 (Reasoning)

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

Quick Verdict

Kimi K2.5 (Reasoning) wins overall with a score of 71 vs 59 (12 point difference).Kimi K2.5 (Reasoning) wins 4 out of 4 categories.

Claude 4 Sonnet

CreatorAnthropic
TypeProprietary
Context200K
Score59

Kimi K2.5 (Reasoning)

CreatorMoonshot AI
TypeOpen Weight
Context128K
Score71

Knowledge

Kimi K2.5 (Reasoning)

Claude 4 Sonnet

71.5

Kimi K2.5 (Reasoning)

89

73
MMLU
92
73
GPQA
90
71
SuperGPQA
88
69
OpenBookQA
86

Coding

Kimi K2.5 (Reasoning)

Claude 4 Sonnet

65

Kimi K2.5 (Reasoning)

84

65
HumanEval
84

Mathematics

Kimi K2.5 (Reasoning)

Claude 4 Sonnet

72

Kimi K2.5 (Reasoning)

93

73
AIME 2023
94
75
AIME 2024
96
74
AIME 2025
95
69
HMMT Feb 2023
90
71
HMMT Feb 2024
92
70
HMMT Feb 2025
91
72
BRUMO 2025
93

Reasoning

Kimi K2.5 (Reasoning)

Claude 4 Sonnet

70

Kimi K2.5 (Reasoning)

87

71
SimpleQA
88
69
MuSR
86

Frequently Asked Questions

Which is better, Claude 4 Sonnet or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) scores higher overall with 71 vs 59, a difference of 12 points across all benchmarks.

Which is better for knowledge tasks, Claude 4 Sonnet or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in knowledge tasks with an average score of 89 vs 71.5.

Which is better for coding, Claude 4 Sonnet or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in coding with an average score of 84 vs 65.

Which is better for math, Claude 4 Sonnet or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in math with an average score of 93 vs 72.

Which is better for reasoning, Claude 4 Sonnet or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in reasoning with an average score of 87 vs 70.

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