benchlm.ai

Kimi K2.5 (Reasoning) vs o3-pro

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 68 (3 point difference).Kimi K2.5 (Reasoning) wins 4 out of 4 categories.

Kimi K2.5 (Reasoning)

CreatorMoonshot AI
TypeOpen Weight
Context128K
Score71

o3-pro

CreatorOpenAI
TypeProprietary
Context200K
Score68

Knowledge

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

89

o3-pro

87.3

92
MMLU
88
90
GPQA
89
88
SuperGPQA
87
86
OpenBookQA
85

Coding

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

84

o3-pro

80

84
HumanEval
80

Mathematics

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

93

o3-pro

89

94
AIME 2023
90
96
AIME 2024
92
95
AIME 2025
91
90
HMMT Feb 2023
86
92
HMMT Feb 2024
88
91
HMMT Feb 2025
87
93
BRUMO 2025
89

Reasoning

Kimi K2.5 (Reasoning)

Kimi K2.5 (Reasoning)

87

o3-pro

85

88
SimpleQA
86
86
MuSR
84

Frequently Asked Questions

Which is better, Kimi K2.5 (Reasoning) or o3-pro?

Kimi K2.5 (Reasoning) scores higher overall with 71 vs 68, a difference of 3 points across all benchmarks.

Which is better for knowledge tasks, Kimi K2.5 (Reasoning) or o3-pro?

Kimi K2.5 (Reasoning) leads in knowledge tasks with an average score of 89 vs 87.3.

Which is better for coding, Kimi K2.5 (Reasoning) or o3-pro?

Kimi K2.5 (Reasoning) leads in coding with an average score of 84 vs 80.

Which is better for math, Kimi K2.5 (Reasoning) or o3-pro?

Kimi K2.5 (Reasoning) leads in math with an average score of 93 vs 89.

Which is better for reasoning, Kimi K2.5 (Reasoning) or o3-pro?

Kimi K2.5 (Reasoning) leads in reasoning with an average score of 87 vs 85.

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