Gemini 3 Pro Deep Think vs o4-mini (high)

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 65 (16 point difference).Gemini 3 Pro Deep Think wins 4 out of 4 categories.

Knowledge

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

96

o4-mini (high)

80.5

99
MMLU
82
97
GPQA
82
95
SuperGPQA
80
93
OpenBookQA
78

Coding

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

91

o4-mini (high)

74

91
HumanEval
74

Mathematics

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

97.1

o4-mini (high)

82

99
AIME 2023
83
99
AIME 2024
85
98
AIME 2025
84
95
HMMT Feb 2023
79
97
HMMT Feb 2024
81
96
HMMT Feb 2025
80
96
BRUMO 2025
82

Reasoning

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

94

o4-mini (high)

79

95
SimpleQA
80
93
MuSR
78

Frequently Asked Questions

Which is better, Gemini 3 Pro Deep Think or o4-mini (high)?

Gemini 3 Pro Deep Think scores higher overall with 81 vs 65, a difference of 16 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3 Pro Deep Think or o4-mini (high)?

Gemini 3 Pro Deep Think leads in knowledge tasks with an average score of 96 vs 80.5.

Which is better for coding, Gemini 3 Pro Deep Think or o4-mini (high)?

Gemini 3 Pro Deep Think leads in coding with an average score of 91 vs 74.

Which is better for math, Gemini 3 Pro Deep Think or o4-mini (high)?

Gemini 3 Pro Deep Think leads in math with an average score of 97.1 vs 82.

Which is better for reasoning, Gemini 3 Pro Deep Think or o4-mini (high)?

Gemini 3 Pro Deep Think leads in reasoning with an average score of 94 vs 79.