Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
Grok 4.1 Fast is clearly ahead on the aggregate, 83 to 33. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Grok 4.1 Fast's sharpest advantage is in mathematics, where it averages 94.3 against 86. The single biggest benchmark swing on the page is GPQA, 92 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 the reasoning model in the pair, while Grok 4.1 Fast 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. Grok 4.1 Fast gives you the larger context window at 1M, compared with 200K for o1-pro.
Pick Grok 4.1 Fast if you want the stronger benchmark profile. o1-pro only becomes the better choice if knowledge is the priority or you want the stronger reasoning-first profile.
Grok 4.1 Fast
77.5
o1-pro
79
Grok 4.1 Fast
94.3
o1-pro
86
Grok 4.1 Fast is ahead overall, 83 to 33. The biggest single separator in this matchup is GPQA, where the scores are 92 and 79.
o1-pro has the edge for knowledge tasks in this comparison, averaging 79 versus 77.5. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Grok 4.1 Fast has the edge for math in this comparison, averaging 94.3 versus 86. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
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