Gemini 3 Pro Deep Think vs o1

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

Gemini 3 Pro Deep Think is clearly ahead on the aggregate, 85 to 51. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

Gemini 3 Pro Deep Think's sharpest advantage is in coding, where it averages 69 against 41. The single biggest benchmark swing on the page is AIME 2024, 99 to 74.3. o1 does hit back in instruction following, so the answer changes if that is the part of the workload you care about most.

Gemini 3 Pro Deep Think gives you the larger context window at 2M, compared with 200K for o1.

Quick Verdict

Pick Gemini 3 Pro Deep Think if you want the stronger benchmark profile. o1 only becomes the better choice if instruction following is the priority.

Knowledge

o1

Gemini 3 Pro Deep Think

82.8

o1

83.8

99
MMLU
91.8
97
GPQA
75.7
95
SuperGPQA
-
93
OpenBookQA
-
81
MMLU-Pro
-
32
HLE
-

Coding

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

69

o1

41

91
HumanEval
-
58
SWE-bench Verified
41
58
LiveCodeBench
-

Mathematics

Gemini 3 Pro Deep Think

Gemini 3 Pro Deep Think

96.5

o1

74.3

99
AIME 2023
-
99
AIME 2024
74.3
98
AIME 2025
-
95
HMMT Feb 2023
-
97
HMMT Feb 2024
-
96
HMMT Feb 2025
-
96
BRUMO 2025
-
92
MATH-500
-

Reasoning

Gemini 3 Pro Deep Think
95
SimpleQA
-
93
MuSR
-
95
BBH
-

Instruction Following

o1

Gemini 3 Pro Deep Think

89

o1

92.2

89
IFEval
92.2

Multilingual

Gemini 3 Pro Deep Think
92
MGSM
-

Frequently Asked Questions

Which is better, Gemini 3 Pro Deep Think or o1?

Gemini 3 Pro Deep Think is ahead overall, 85 to 51. The biggest single separator in this matchup is AIME 2024, where the scores are 99 and 74.3.

Which is better for knowledge tasks, Gemini 3 Pro Deep Think or o1?

o1 has the edge for knowledge tasks in this comparison, averaging 83.8 versus 82.8. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, Gemini 3 Pro Deep Think or o1?

Gemini 3 Pro Deep Think has the edge for coding in this comparison, averaging 69 versus 41. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for math, Gemini 3 Pro Deep Think or o1?

Gemini 3 Pro Deep Think has the edge for math in this comparison, averaging 96.5 versus 74.3. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.

Which is better for instruction following, Gemini 3 Pro Deep Think or o1?

o1 has the edge for instruction following in this comparison, averaging 92.2 versus 89. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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