Gemini 3.1 Pro vs Kimi K2.5 (Reasoning)

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

Quick Verdict

Gemini 3.1 Pro wins overall with a score of 87 vs 71 (16 point difference).Gemini 3.1 Pro wins 4 out of 4 categories.

Knowledge

Gemini 3.1 Pro

Gemini 3.1 Pro

96

Kimi K2.5 (Reasoning)

89

99
MMLU
92
97
GPQA
90
95
SuperGPQA
88
93
OpenBookQA
86

Coding

Gemini 3.1 Pro

Gemini 3.1 Pro

91

Kimi K2.5 (Reasoning)

84

91
HumanEval
84

Mathematics

Gemini 3.1 Pro

Gemini 3.1 Pro

97.1

Kimi K2.5 (Reasoning)

93

99
AIME 2023
94
99
AIME 2024
96
98
AIME 2025
95
95
HMMT Feb 2023
90
97
HMMT Feb 2024
92
96
HMMT Feb 2025
91
96
BRUMO 2025
93

Reasoning

Gemini 3.1 Pro

Gemini 3.1 Pro

94

Kimi K2.5 (Reasoning)

87

95
SimpleQA
88
93
MuSR
86

Frequently Asked Questions

Which is better, Gemini 3.1 Pro or Kimi K2.5 (Reasoning)?

Gemini 3.1 Pro scores higher overall with 87 vs 71, a difference of 16 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3.1 Pro or Kimi K2.5 (Reasoning)?

Gemini 3.1 Pro leads in knowledge tasks with an average score of 96 vs 89.

Which is better for coding, Gemini 3.1 Pro or Kimi K2.5 (Reasoning)?

Gemini 3.1 Pro leads in coding with an average score of 91 vs 84.

Which is better for math, Gemini 3.1 Pro or Kimi K2.5 (Reasoning)?

Gemini 3.1 Pro leads in math with an average score of 97.1 vs 93.

Which is better for reasoning, Gemini 3.1 Pro or Kimi K2.5 (Reasoning)?

Gemini 3.1 Pro leads in reasoning with an average score of 94 vs 87.