benchlm.ai

Gemini 2.5 Flash vs Gemini 3.1 Pro

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 41 (46 point difference).Gemini 3.1 Pro wins 4 out of 4 categories.

Gemini 2.5 Flash

CreatorGoogle
TypeProprietary
Context1M
Score41

Gemini 3.1 Pro

CreatorGoogle
TypeProprietary
Context1M
Score87

Knowledge

Gemini 3.1 Pro

Gemini 2.5 Flash

47.8

Gemini 3.1 Pro

96

50
MMLU
99
49
GPQA
97
47
SuperGPQA
95
45
OpenBookQA
93

Coding

Gemini 3.1 Pro

Gemini 2.5 Flash

42

Gemini 3.1 Pro

91

42
HumanEval
91

Mathematics

Gemini 3.1 Pro

Gemini 2.5 Flash

49

Gemini 3.1 Pro

97.1

50
AIME 2023
99
52
AIME 2024
99
51
AIME 2025
98
46
HMMT Feb 2023
95
48
HMMT Feb 2024
97
47
HMMT Feb 2025
96
49
BRUMO 2025
96

Reasoning

Gemini 3.1 Pro

Gemini 2.5 Flash

47

Gemini 3.1 Pro

94

48
SimpleQA
95
46
MuSR
93

Frequently Asked Questions

Which is better, Gemini 2.5 Flash or Gemini 3.1 Pro?

Gemini 3.1 Pro scores higher overall with 87 vs 41, a difference of 46 points across all benchmarks.

Which is better for knowledge tasks, Gemini 2.5 Flash or Gemini 3.1 Pro?

Gemini 3.1 Pro leads in knowledge tasks with an average score of 96 vs 47.8.

Which is better for coding, Gemini 2.5 Flash or Gemini 3.1 Pro?

Gemini 3.1 Pro leads in coding with an average score of 91 vs 42.

Which is better for math, Gemini 2.5 Flash or Gemini 3.1 Pro?

Gemini 3.1 Pro leads in math with an average score of 97.1 vs 49.

Which is better for reasoning, Gemini 2.5 Flash or Gemini 3.1 Pro?

Gemini 3.1 Pro leads in reasoning with an average score of 94 vs 47.

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