benchlm.ai

GPT-4o 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 56 (15 point difference).Kimi K2.5 (Reasoning) wins 4 out of 4 categories.

GPT-4o

CreatorOpenAI
TypeProprietary
Context128K
Score56

Kimi K2.5 (Reasoning)

CreatorMoonshot AI
TypeOpen Weight
Context128K
Score71

Knowledge

Kimi K2.5 (Reasoning)

GPT-4o

64.5

Kimi K2.5 (Reasoning)

89

66
MMLU
92
66
GPQA
90
64
SuperGPQA
88
62
OpenBookQA
86

Coding

Kimi K2.5 (Reasoning)

GPT-4o

58

Kimi K2.5 (Reasoning)

84

58
HumanEval
84

Mathematics

Kimi K2.5 (Reasoning)

GPT-4o

65

Kimi K2.5 (Reasoning)

93

66
AIME 2023
94
68
AIME 2024
96
67
AIME 2025
95
62
HMMT Feb 2023
90
64
HMMT Feb 2024
92
63
HMMT Feb 2025
91
65
BRUMO 2025
93

Reasoning

Kimi K2.5 (Reasoning)

GPT-4o

63

Kimi K2.5 (Reasoning)

87

64
SimpleQA
88
62
MuSR
86

Frequently Asked Questions

Which is better, GPT-4o or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) scores higher overall with 71 vs 56, a difference of 15 points across all benchmarks.

Which is better for knowledge tasks, GPT-4o or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in knowledge tasks with an average score of 89 vs 64.5.

Which is better for coding, GPT-4o or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in coding with an average score of 84 vs 58.

Which is better for math, GPT-4o or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in math with an average score of 93 vs 65.

Which is better for reasoning, GPT-4o or Kimi K2.5 (Reasoning)?

Kimi K2.5 (Reasoning) leads in reasoning with an average score of 87 vs 63.

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