benchlm.ai

Gemini 3 Pro Deep Think vs GPT-5.1

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 76 (5 point difference).Gemini 3 Pro Deep Think wins 3 out of 4 categories.

Gemini 3 Pro Deep Think

CreatorGoogle
TypeProprietary
Context2M
Score81

GPT-5.1

CreatorOpenAI
TypeProprietary
Context400K
Score76

Knowledge

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

96

GPT-5.1

94

99
MMLU
97
97
GPQA
95
95
SuperGPQA
93
93
OpenBookQA
91

Coding

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

91

GPT-5.1

89

91
HumanEval
89

Mathematics

Tie

Gemini 3 Pro Deep Think

97.1

GPT-5.1

97.1

99
AIME 2023
99
99
AIME 2024
99
98
AIME 2025
98
95
HMMT Feb 2023
95
97
HMMT Feb 2024
97
96
HMMT Feb 2025
96
96
BRUMO 2025
96

Reasoning

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

94

GPT-5.1

92

95
SimpleQA
93
93
MuSR
91

Frequently Asked Questions

Which is better, Gemini 3 Pro Deep Think or GPT-5.1?

Gemini 3 Pro Deep Think scores higher overall with 81 vs 76, a difference of 5 points across all benchmarks.

Which is better for knowledge tasks, Gemini 3 Pro Deep Think or GPT-5.1?

Gemini 3 Pro Deep Think leads in knowledge tasks with an average score of 96 vs 94.

Which is better for coding, Gemini 3 Pro Deep Think or GPT-5.1?

Gemini 3 Pro Deep Think leads in coding with an average score of 91 vs 89.

Which is better for math, Gemini 3 Pro Deep Think or GPT-5.1?

Gemini 3 Pro Deep Think and GPT-5.1 are tied for math with average scores of 97.1.

Which is better for reasoning, Gemini 3 Pro Deep Think or GPT-5.1?

Gemini 3 Pro Deep Think leads in reasoning with an average score of 94 vs 92.

Related Comparisons

Gemini 3 Pro Deep Think vs GPT-5.4Gemini 3 Pro Deep Think vs Gemini 3.1 ProGemini 3 Pro Deep Think vs Claude Opus 4.6Gemini 3 Pro Deep Think vs GPT-5.3 CodexGemini 3 Pro Deep Think vs Grok 4.1Gemini 3 Pro Deep Think vs GPT-5.2