Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
o3-pro is clearly ahead on the aggregate, 71 to 61. The gap is large enough that you do not need to squint at the spreadsheet to see the difference.
o3-pro's sharpest advantage is in agentic, where it averages 70.4 against 55.3. The single biggest benchmark swing on the page is AIME 2023, 90 to 67. Nemotron 3 Super 120B A12B does hit back in instruction following, so the answer changes if that is the part of the workload you care about most.
o3-pro is the reasoning model in the pair, while Nemotron 3 Super 120B A12B 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. Nemotron 3 Super 120B A12B gives you the larger context window at 256K, compared with 200K for o3-pro.
Pick o3-pro if you want the stronger benchmark profile. Nemotron 3 Super 120B A12B only becomes the better choice if instruction following is the priority or you need the larger 256K context window.
o3-pro
70.4
Nemotron 3 Super 120B A12B
55.3
o3-pro
49.2
Nemotron 3 Super 120B A12B
44.2
o3-pro
74.1
Nemotron 3 Super 120B A12B
60.4
o3-pro
83.6
Nemotron 3 Super 120B A12B
71.8
o3-pro
67.1
Nemotron 3 Super 120B A12B
55.8
o3-pro
82
Nemotron 3 Super 120B A12B
86
o3-pro
81.1
Nemotron 3 Super 120B A12B
81.5
o3-pro
89
Nemotron 3 Super 120B A12B
74.6
o3-pro is ahead overall, 71 to 61. The biggest single separator in this matchup is AIME 2023, where the scores are 90 and 67.
o3-pro has the edge for knowledge tasks in this comparison, averaging 67.1 versus 55.8. Inside this category, GPQA is the benchmark that creates the most daylight between them.
o3-pro has the edge for coding in this comparison, averaging 49.2 versus 44.2. Inside this category, HumanEval is the benchmark that creates the most daylight between them.
o3-pro has the edge for math in this comparison, averaging 89 versus 74.6. Inside this category, AIME 2023 is the benchmark that creates the most daylight between them.
o3-pro has the edge for reasoning in this comparison, averaging 83.6 versus 71.8. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
o3-pro has the edge for agentic tasks in this comparison, averaging 70.4 versus 55.3. Inside this category, BrowseComp is the benchmark that creates the most daylight between them.
o3-pro has the edge for multimodal and grounded tasks in this comparison, averaging 74.1 versus 60.4. Inside this category, MMMU-Pro is the benchmark that creates the most daylight between them.
Nemotron 3 Super 120B A12B has the edge for instruction following in this comparison, averaging 86 versus 82. Inside this category, IFEval is the benchmark that creates the most daylight between them.
Nemotron 3 Super 120B A12B has the edge for multilingual tasks in this comparison, averaging 81.5 versus 81.1. Inside this category, MGSM is the benchmark that creates the most daylight between them.
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