Gemini 3 Pro Deep Think vs GPT-4o

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 56 (25 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

GPT-4o

64.5

99
MMLU
66
97
GPQA
66
95
SuperGPQA
64
93
OpenBookQA
62

Coding

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

91

GPT-4o

58

91
HumanEval
58

Mathematics

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

97.1

GPT-4o

65

99
AIME 2023
66
99
AIME 2024
68
98
AIME 2025
67
95
HMMT Feb 2023
62
97
HMMT Feb 2024
64
96
HMMT Feb 2025
63
96
BRUMO 2025
65

Reasoning

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

94

GPT-4o

63

95
SimpleQA
64
93
MuSR
62

Frequently Asked Questions

Which is better, Gemini 3 Pro Deep Think or GPT-4o?

Gemini 3 Pro Deep Think scores higher overall with 81 vs 56, a difference of 25 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3 Pro Deep Think or GPT-4o?

Gemini 3 Pro Deep Think leads in knowledge tasks with an average score of 96 vs 64.5.

Which is better for coding, Gemini 3 Pro Deep Think or GPT-4o?

Gemini 3 Pro Deep Think leads in coding with an average score of 91 vs 58.

Which is better for math, Gemini 3 Pro Deep Think or GPT-4o?

Gemini 3 Pro Deep Think leads in math with an average score of 97.1 vs 65.

Which is better for reasoning, Gemini 3 Pro Deep Think or GPT-4o?

Gemini 3 Pro Deep Think leads in reasoning with an average score of 94 vs 63.