benchlm.ai

Kimi K2.5 (Reasoning) vs o4-mini (high)

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 65 (6 point difference).Kimi K2.5 (Reasoning) wins 4 out of 4 categories.

Kimi K2.5 (Reasoning)

CreatorMoonshot AI
TypeOpen Weight
Context128K
Score71

o4-mini (high)

CreatorOpenAI
TypeProprietary
Context200K
Score65

Knowledge

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

89

o4-mini (high)

80.5

92
MMLU
82
90
GPQA
82
88
SuperGPQA
80
86
OpenBookQA
78

Coding

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

84

o4-mini (high)

74

84
HumanEval
74

Mathematics

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

93

o4-mini (high)

82

94
AIME 2023
83
96
AIME 2024
85
95
AIME 2025
84
90
HMMT Feb 2023
79
92
HMMT Feb 2024
81
91
HMMT Feb 2025
80
93
BRUMO 2025
82

Reasoning

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

87

o4-mini (high)

79

88
SimpleQA
80
86
MuSR
78

Frequently Asked Questions

Which is better, Kimi K2.5 (Reasoning) or o4-mini (high)?

Kimi K2.5 (Reasoning) scores higher overall with 71 vs 65, a difference of 6 points across all benchmarks.

Which is better for knowledge tasks, Kimi K2.5 (Reasoning) or o4-mini (high)?

Kimi K2.5 (Reasoning) leads in knowledge tasks with an average score of 89 vs 80.5.

Which is better for coding, Kimi K2.5 (Reasoning) or o4-mini (high)?

Kimi K2.5 (Reasoning) leads in coding with an average score of 84 vs 74.

Which is better for math, Kimi K2.5 (Reasoning) or o4-mini (high)?

Kimi K2.5 (Reasoning) leads in math with an average score of 93 vs 82.

Which is better for reasoning, Kimi K2.5 (Reasoning) or o4-mini (high)?

Kimi K2.5 (Reasoning) leads in reasoning with an average score of 87 vs 79.

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