benchlm.ai

Gemini 3.1 Pro vs o3-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 68 (19 point difference).Gemini 3.1 Pro wins 4 out of 4 categories.

Gemini 3.1 Pro

CreatorGoogle
TypeProprietary
Context1M
Score87

o3-pro

CreatorOpenAI
TypeProprietary
Context200K
Score68

Knowledge

Gemini 3.1 Pro

Gemini 3.1 Pro

96

o3-pro

87.3

99
MMLU
88
97
GPQA
89
95
SuperGPQA
87
93
OpenBookQA
85

Coding

Gemini 3.1 Pro

Gemini 3.1 Pro

91

o3-pro

80

91
HumanEval
80

Mathematics

Gemini 3.1 Pro

Gemini 3.1 Pro

97.1

o3-pro

89

99
AIME 2023
90
99
AIME 2024
92
98
AIME 2025
91
95
HMMT Feb 2023
86
97
HMMT Feb 2024
88
96
HMMT Feb 2025
87
96
BRUMO 2025
89

Reasoning

Gemini 3.1 Pro

Gemini 3.1 Pro

94

o3-pro

85

95
SimpleQA
86
93
MuSR
84

Frequently Asked Questions

Which is better, Gemini 3.1 Pro or o3-pro?

Gemini 3.1 Pro scores higher overall with 87 vs 68, a difference of 19 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3.1 Pro or o3-pro?

Gemini 3.1 Pro leads in knowledge tasks with an average score of 96 vs 87.3.

Which is better for coding, Gemini 3.1 Pro or o3-pro?

Gemini 3.1 Pro leads in coding with an average score of 91 vs 80.

Which is better for math, Gemini 3.1 Pro or o3-pro?

Gemini 3.1 Pro leads in math with an average score of 97.1 vs 89.

Which is better for reasoning, Gemini 3.1 Pro or o3-pro?

Gemini 3.1 Pro leads in reasoning with an average score of 94 vs 85.

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