Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
Grok 4.1 Fast is clearly ahead on the aggregate, 83 to 32. 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 knowledge, where it averages 77.5 against 73.7. The single biggest benchmark swing on the page is MMLU, 94 to 73.7. DBRX Instruct does hit back in coding, so the answer changes if that is the part of the workload you care about most.
Grok 4.1 Fast gives you the larger context window at 1M, compared with 32K for DBRX Instruct.
Pick Grok 4.1 Fast if you want the stronger benchmark profile. DBRX Instruct only becomes the better choice if coding is the priority.
Grok 4.1 Fast
77.5
DBRX Instruct
73.7
Grok 4.1 Fast
69.3
DBRX Instruct
70.1
Grok 4.1 Fast is ahead overall, 83 to 32. The biggest single separator in this matchup is MMLU, where the scores are 94 and 73.7.
Grok 4.1 Fast has the edge for knowledge tasks in this comparison, averaging 77.5 versus 73.7. Inside this category, MMLU is the benchmark that creates the most daylight between them.
DBRX Instruct has the edge for coding in this comparison, averaging 70.1 versus 69.3. Inside this category, HumanEval is the benchmark that creates the most daylight between them.
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