Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
GPT-5 mini is clearly ahead on the aggregate, 74 to 33. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
GPT-5 mini's sharpest advantage is in mathematics, where it averages 88.5 against 86. The single biggest benchmark swing on the page is GPQA, 86 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 gives you the larger context window at 200K, compared with 128K for GPT-5 mini.
Pick GPT-5 mini if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority or you need the larger 200K context window.
GPT-5 mini
71.5
o1-pro
79
GPT-5 mini
88.5
o1-pro
86
GPT-5 mini is ahead overall, 74 to 33. The biggest single separator in this matchup is GPQA, where the scores are 86 and 79.
o1-pro has the edge for knowledge tasks in this comparison, averaging 79 versus 71.5. Inside this category, GPQA is the benchmark that creates the most daylight between them.
GPT-5 mini has the edge for math in this comparison, averaging 88.5 versus 86. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
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