benchlm.ai

Claude 4.1 Opus vs Kimi K2.5

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

Quick Verdict

Kimi K2.5 wins overall with a score of 62 vs 61 (1 point difference).Kimi K2.5 wins 3 out of 4 categories.

Claude 4.1 Opus

CreatorAnthropic
TypeProprietary
Context200K
Score61

Kimi K2.5

CreatorMoonshot AI
TypeOpen Weight
Context128K
Score62

Knowledge

Kimi K2.5

Claude 4.1 Opus

74.5

Kimi K2.5

74.8

76
MMLU
77
76
GPQA
76
74
SuperGPQA
74
72
OpenBookQA
72

Coding

Kimi K2.5

Claude 4.1 Opus

68

Kimi K2.5

69

68
HumanEval
69

Mathematics

Kimi K2.5

Claude 4.1 Opus

75

Kimi K2.5

76

76
AIME 2023
77
78
AIME 2024
79
77
AIME 2025
78
72
HMMT Feb 2023
73
74
HMMT Feb 2024
75
73
HMMT Feb 2025
74
75
BRUMO 2025
76

Reasoning

Tie

Claude 4.1 Opus

73

Kimi K2.5

73

74
SimpleQA
74
72
MuSR
72

Frequently Asked Questions

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

Kimi K2.5 scores higher overall with 62 vs 61, a difference of 1 points across all benchmarks.

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

Kimi K2.5 leads in knowledge tasks with an average score of 74.8 vs 74.5.

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

Kimi K2.5 leads in coding with an average score of 69 vs 68.

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

Kimi K2.5 leads in math with an average score of 76 vs 75.

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

Claude 4.1 Opus and Kimi K2.5 are tied for reasoning with average scores of 73.

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