o3-pro vs o1

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

o3-pro is clearly ahead on the aggregate, 77 to 51. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.

o3-pro's sharpest advantage is in coding, where it averages 56.7 against 41. The single biggest benchmark swing on the page is AIME 2024, 92 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.

Quick Verdict

Pick o3-pro if you want the stronger benchmark profile. o1 only becomes the better choice if instruction following is the priority.

Knowledge

o1

o3-pro

75

o1

83.8

88
MMLU
91.8
89
GPQA
75.7
87
SuperGPQA
-
85
OpenBookQA
-
75
MMLU-Pro
-
26
HLE
-

Coding

o3-pro

o3-pro

56.7

o1

41

80
HumanEval
-
46
SWE-bench Verified
41
44
LiveCodeBench
-

Mathematics

o3-pro

o3-pro

89

o1

74.3

90
AIME 2023
-
92
AIME 2024
74.3
91
AIME 2025
-
86
HMMT Feb 2023
-
88
HMMT Feb 2024
-
87
HMMT Feb 2025
-
89
BRUMO 2025
-
89
MATH-500
-

Reasoning

o3-pro
86
SimpleQA
-
84
MuSR
-
89
BBH
-

Instruction Following

o1

o3-pro

82

o1

92.2

82
IFEval
92.2

Multilingual

o3-pro
83
MGSM
-

Frequently Asked Questions

Which is better, o3-pro or o1?

o3-pro is ahead overall, 77 to 51. The biggest single separator in this matchup is AIME 2024, where the scores are 92 and 74.3.

Which is better for knowledge tasks, o3-pro or o1?

o1 has the edge for knowledge tasks in this comparison, averaging 83.8 versus 75. Inside this category, GPQA is the benchmark that creates the most daylight between them.

Which is better for coding, o3-pro or o1?

o3-pro has the edge for coding in this comparison, averaging 56.7 versus 41. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.

Which is better for math, o3-pro or o1?

o3-pro has the edge for math in this comparison, averaging 89 versus 74.3. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.

Which is better for instruction following, o3-pro or o1?

o1 has the edge for instruction following in this comparison, averaging 92.2 versus 82. Inside this category, IFEval is the benchmark that creates the most daylight between them.

Last updated: March 9, 2026

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