benchlm.ai

GPT-5 (high) vs Kimi K2.5

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

Quick Verdict

GPT-5 (high) wins overall with a score of 72 vs 62 (10 point difference).GPT-5 (high) wins 4 out of 4 categories.

GPT-5 (high)

CreatorOpenAI
TypeProprietary
Context128K
Score72

Kimi K2.5

CreatorMoonshot AI
TypeOpen Weight
Context128K
Score62

Knowledge

GPT-5 (high)

GPT-5 (high)

90

Kimi K2.5

74.8

93
MMLU
77
91
GPQA
76
89
SuperGPQA
74
87
OpenBookQA
72

Coding

GPT-5 (high)

GPT-5 (high)

85

Kimi K2.5

69

85
HumanEval
69

Mathematics

GPT-5 (high)

GPT-5 (high)

94

Kimi K2.5

76

95
AIME 2023
77
97
AIME 2024
79
96
AIME 2025
78
91
HMMT Feb 2023
73
93
HMMT Feb 2024
75
92
HMMT Feb 2025
74
94
BRUMO 2025
76

Reasoning

GPT-5 (high)

GPT-5 (high)

88

Kimi K2.5

73

89
SimpleQA
74
87
MuSR
72

Frequently Asked Questions

Which is better, GPT-5 (high) or Kimi K2.5?

GPT-5 (high) scores higher overall with 72 vs 62, a difference of 10 points across all benchmarks.

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

GPT-5 (high) leads in knowledge tasks with an average score of 90 vs 74.8.

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

GPT-5 (high) leads in coding with an average score of 85 vs 69.

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

GPT-5 (high) leads in math with an average score of 94 vs 76.

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

GPT-5 (high) leads in reasoning with an average score of 88 vs 73.

Related Comparisons

GPT-5 (high) vs GPT-5.4GPT-5 (high) vs Gemini 3.1 ProGPT-5 (high) vs Claude Opus 4.6GPT-5 (high) vs GPT-5.3 CodexGPT-5 (high) vs Grok 4.1GPT-5 (high) vs GPT-5.2