Kimi K2.5 vs Qwen3.5 397B (Reasoning)

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

Quick Verdict

Qwen3.5 397B (Reasoning) wins overall with a score of 70 vs 62 (8 point difference).Qwen3.5 397B (Reasoning) wins 4 out of 4 categories.

Knowledge

Qwen3.5 397B (Reasoning)

Kimi K2.5

74.8

Qwen3.5 397B (Reasoning)

88

77
MMLU
91
76
GPQA
89
74
SuperGPQA
87
72
OpenBookQA
85

Coding

Qwen3.5 397B (Reasoning)

Kimi K2.5

69

Qwen3.5 397B (Reasoning)

83

69
HumanEval
83

Mathematics

Qwen3.5 397B (Reasoning)

Kimi K2.5

76

Qwen3.5 397B (Reasoning)

92

77
AIME 2023
93
79
AIME 2024
95
78
AIME 2025
94
73
HMMT Feb 2023
89
75
HMMT Feb 2024
91
74
HMMT Feb 2025
90
76
BRUMO 2025
92

Reasoning

Qwen3.5 397B (Reasoning)

Kimi K2.5

73

Qwen3.5 397B (Reasoning)

86

74
SimpleQA
87
72
MuSR
85

Frequently Asked Questions

Which is better, Kimi K2.5 or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) scores higher overall with 70 vs 62, a difference of 8 points across all benchmarks.

Which is better for knowledge tasks, Kimi K2.5 or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in knowledge tasks with an average score of 88 vs 74.8.

Which is better for coding, Kimi K2.5 or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in coding with an average score of 83 vs 69.

Which is better for math, Kimi K2.5 or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in math with an average score of 92 vs 76.

Which is better for reasoning, Kimi K2.5 or Qwen3.5 397B (Reasoning)?

Qwen3.5 397B (Reasoning) leads in reasoning with an average score of 86 vs 73.