GPT-4o vs Kimi K2.5

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

Quick Verdict

Kimi K2.5 wins overall with a score of 62 vs 56 (6 point difference).Kimi K2.5 wins 4 out of 4 categories.

Knowledge

Kimi K2.5

GPT-4o

64.5

Kimi K2.5

74.8

66
MMLU
77
66
GPQA
76
64
SuperGPQA
74
62
OpenBookQA
72

Coding

Kimi K2.5

GPT-4o

58

Kimi K2.5

69

58
HumanEval
69

Mathematics

Kimi K2.5

GPT-4o

65

Kimi K2.5

76

66
AIME 2023
77
68
AIME 2024
79
67
AIME 2025
78
62
HMMT Feb 2023
73
64
HMMT Feb 2024
75
63
HMMT Feb 2025
74
65
BRUMO 2025
76

Reasoning

Kimi K2.5

GPT-4o

63

Kimi K2.5

73

64
SimpleQA
74
62
MuSR
72

Frequently Asked Questions

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

Kimi K2.5 scores higher overall with 62 vs 56, a difference of 6 points across all benchmarks.

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

Kimi K2.5 leads in knowledge tasks with an average score of 74.8 vs 64.5.

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

Kimi K2.5 leads in coding with an average score of 69 vs 58.

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

Kimi K2.5 leads in math with an average score of 76 vs 65.

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

Kimi K2.5 leads in reasoning with an average score of 73 vs 63.