Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
o3-pro is clearly ahead on the aggregate, 77 to 35. 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 mathematics, where it averages 89 against 23.1. The single biggest benchmark swing on the page is AIME 2024, 92 to 23.1. GPT-4.1 mini does hit back in instruction following, so the answer changes if that is the part of the workload you care about most.
o3-pro is the reasoning model in the pair, while GPT-4.1 mini is not. That usually helps on harder chain-of-thought-heavy tests, but it can also mean more latency and more token spend in real use. GPT-4.1 mini gives you the larger context window at 1M, compared with 200K for o3-pro.
Pick o3-pro if you want the stronger benchmark profile. GPT-4.1 mini only becomes the better choice if instruction following is the priority or you need the larger 1M context window.
o3-pro
75
GPT-4.1 mini
75.9
o3-pro
56.7
GPT-4.1 mini
23.6
o3-pro
89
GPT-4.1 mini
23.1
o3-pro
82
GPT-4.1 mini
88.5
o3-pro is ahead overall, 77 to 35. The biggest single separator in this matchup is AIME 2024, where the scores are 92 and 23.1.
GPT-4.1 mini has the edge for knowledge tasks in this comparison, averaging 75.9 versus 75. Inside this category, GPQA is the benchmark that creates the most daylight between them.
o3-pro has the edge for coding in this comparison, averaging 56.7 versus 23.6. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
o3-pro has the edge for math in this comparison, averaging 89 versus 23.1. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
GPT-4.1 mini has the edge for instruction following in this comparison, averaging 88.5 versus 82. Inside this category, IFEval is the benchmark that creates the most daylight between them.
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