Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
o3 is clearly ahead on the aggregate, 76 to 33. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
o3's sharpest advantage is in mathematics, where it averages 87.1 against 86. The single biggest benchmark swing on the page is GPQA, 87 to 79. o1-pro does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
o1-pro is also the more expensive model on tokens at $150.00 input / $600.00 output per 1M tokens, versus $10.00 input / $40.00 output per 1M tokens for o3. That is roughly 15.0x on output cost alone.
Pick o3 if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority.
o3
73.3
o1-pro
79
o3
87.1
o1-pro
86
o3 is ahead overall, 76 to 33. The biggest single separator in this matchup is GPQA, where the scores are 87 and 79.
o1-pro has the edge for knowledge tasks in this comparison, averaging 79 versus 73.3. Inside this category, GPQA is the benchmark that creates the most daylight between them.
o3 has the edge for math in this comparison, averaging 87.1 versus 86. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
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