benchlm.ai

Gemini 3 Pro Deep Think vs o3-pro

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

Quick Verdict

Gemini 3 Pro Deep Think wins overall with a score of 81 vs 68 (13 point difference).Gemini 3 Pro Deep Think wins 4 out of 4 categories.

Gemini 3 Pro Deep Think

CreatorGoogle
TypeProprietary
Context2M
Score81

o3-pro

CreatorOpenAI
TypeProprietary
Context200K
Score68

Knowledge

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

96

o3-pro

87.3

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

Coding

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

91

o3-pro

80

91
HumanEval
80

Mathematics

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

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 Pro Deep Think

Gemini 3 Pro Deep Think

94

o3-pro

85

95
SimpleQA
86
93
MuSR
84

Frequently Asked Questions

Which is better, Gemini 3 Pro Deep Think or o3-pro?

Gemini 3 Pro Deep Think scores higher overall with 81 vs 68, a difference of 13 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3 Pro Deep Think or o3-pro?

Gemini 3 Pro Deep Think leads in knowledge tasks with an average score of 96 vs 87.3.

Which is better for coding, Gemini 3 Pro Deep Think or o3-pro?

Gemini 3 Pro Deep Think leads in coding with an average score of 91 vs 80.

Which is better for math, Gemini 3 Pro Deep Think or o3-pro?

Gemini 3 Pro Deep Think leads in math with an average score of 97.1 vs 89.

Which is better for reasoning, Gemini 3 Pro Deep Think or o3-pro?

Gemini 3 Pro Deep Think leads in reasoning with an average score of 94 vs 85.

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