Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
MiMo-V2-Flash is clearly ahead on the aggregate, 71 to 56. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
MiMo-V2-Flash's sharpest advantage is in coding, where it averages 55 against 49.3. The single biggest benchmark swing on the page is IFEval, 84 to 93.9. o3-mini does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
o3-mini gives you the larger context window at 200K, compared with 128K for MiMo-V2-Flash.
Pick MiMo-V2-Flash if you want the stronger benchmark profile. o3-mini only becomes the better choice if knowledge is the priority or you need the larger 200K context window.
MiMo-V2-Flash
65.5
o3-mini
82.1
MiMo-V2-Flash
55
o3-mini
49.3
MiMo-V2-Flash
79.5
o3-mini
87.3
MiMo-V2-Flash
84
o3-mini
93.9
MiMo-V2-Flash is ahead overall, 71 to 56. The biggest single separator in this matchup is IFEval, where the scores are 84 and 93.9.
o3-mini has the edge for knowledge tasks in this comparison, averaging 82.1 versus 65.5. Inside this category, MMLU is the benchmark that creates the most daylight between them.
MiMo-V2-Flash has the edge for coding in this comparison, averaging 55 versus 49.3. Inside this category, SWE-bench Verified is the benchmark that creates the most daylight between them.
o3-mini has the edge for math in this comparison, averaging 87.3 versus 79.5. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
o3-mini has the edge for instruction following in this comparison, averaging 93.9 versus 84. Inside this category, IFEval is the benchmark that creates the most daylight between them.
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