Side-by-side benchmark comparison across knowledge, coding, math, and reasoning.
Nemotron 3 Ultra 500B is clearly ahead on the aggregate, 67 to 56. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
Nemotron 3 Ultra 500B's sharpest advantage is in coding, where it averages 49.7 against 49.3. The single biggest benchmark swing on the page is MMLU, 74 to 86.9. o3-mini does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
Nemotron 3 Ultra 500B gives you the larger context window at 10M, compared with 200K for o3-mini.
Pick Nemotron 3 Ultra 500B if you want the stronger benchmark profile. o3-mini only becomes the better choice if knowledge is the priority.
Nemotron 3 Ultra 500B
62.5
o3-mini
82.1
Nemotron 3 Ultra 500B
49.7
o3-mini
49.3
Nemotron 3 Ultra 500B
74.4
o3-mini
87.3
Nemotron 3 Ultra 500B
84
o3-mini
93.9
Nemotron 3 Ultra 500B is ahead overall, 67 to 56. The biggest single separator in this matchup is MMLU, where the scores are 74 and 86.9.
o3-mini has the edge for knowledge tasks in this comparison, averaging 82.1 versus 62.5. Inside this category, MMLU is the benchmark that creates the most daylight between them.
Nemotron 3 Ultra 500B has the edge for coding in this comparison, averaging 49.7 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 74.4. 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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