Claude 4.1 Opus Thinking 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 29 (42 point difference).Kimi K2.5 (Reasoning) wins 4 out of 4 categories.

Knowledge

Kimi K2.5 (Reasoning)

Claude 4.1 Opus Thinking

35.8

Kimi K2.5 (Reasoning)

89

38
MMLU
92
37
GPQA
90
35
SuperGPQA
88
33
OpenBookQA
86

Coding

Kimi K2.5 (Reasoning)

Claude 4.1 Opus Thinking

30

Kimi K2.5 (Reasoning)

84

30
HumanEval
84

Mathematics

Kimi K2.5 (Reasoning)

Claude 4.1 Opus Thinking

37

Kimi K2.5 (Reasoning)

93

38
AIME 2023
94
40
AIME 2024
96
39
AIME 2025
95
34
HMMT Feb 2023
90
36
HMMT Feb 2024
92
35
HMMT Feb 2025
91
37
BRUMO 2025
93

Reasoning

Kimi K2.5 (Reasoning)

Claude 4.1 Opus Thinking

35

Kimi K2.5 (Reasoning)

87

36
SimpleQA
88
34
MuSR
86

Frequently Asked Questions

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

Kimi K2.5 (Reasoning) scores higher overall with 71 vs 29, a difference of 42 points across all benchmarks.

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

Kimi K2.5 (Reasoning) leads in knowledge tasks with an average score of 89 vs 35.8.

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

Kimi K2.5 (Reasoning) leads in coding with an average score of 84 vs 30.

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

Kimi K2.5 (Reasoning) leads in math with an average score of 93 vs 37.

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

Kimi K2.5 (Reasoning) leads in reasoning with an average score of 87 vs 35.