benchlm.ai

Claude 4.1 Opus 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 61 (10 point difference).Kimi K2.5 (Reasoning) wins 4 out of 4 categories.

Claude 4.1 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score61

Kimi K2.5 (Reasoning)

CreatorMoonshot AI
TypeOpen Weight
Context128K
Score71

Knowledge

Kimi K2.5 (Reasoning)

Claude 4.1 Opus

74.5

Kimi K2.5 (Reasoning)

89

76
MMLU
92
76
GPQA
90
74
SuperGPQA
88
72
OpenBookQA
86

Coding

Kimi K2.5 (Reasoning)

Claude 4.1 Opus

68

Kimi K2.5 (Reasoning)

84

68
HumanEval
84

Mathematics

Kimi K2.5 (Reasoning)

Claude 4.1 Opus

75

Kimi K2.5 (Reasoning)

93

76
AIME 2023
94
78
AIME 2024
96
77
AIME 2025
95
72
HMMT Feb 2023
90
74
HMMT Feb 2024
92
73
HMMT Feb 2025
91
75
BRUMO 2025
93

Reasoning

Kimi K2.5 (Reasoning)

Claude 4.1 Opus

73

Kimi K2.5 (Reasoning)

87

74
SimpleQA
88
72
MuSR
86

Frequently Asked Questions

Which is better, Claude 4.1 Opus or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) scores higher overall with 71 vs 61, a difference of 10 points across all benchmarks.

Which is better for knowledge tasks, Claude 4.1 Opus or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in knowledge tasks with an average score of 89 vs 74.5.

Which is better for coding, Claude 4.1 Opus or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in coding with an average score of 84 vs 68.

Which is better for math, Claude 4.1 Opus or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in math with an average score of 93 vs 75.

Which is better for reasoning, Claude 4.1 Opus or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in reasoning with an average score of 87 vs 73.

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