Side-by-side benchmark comparison across agentic, coding, multimodal, knowledge, reasoning, and math workflows.
Nemotron Ultra 253B finishes one point ahead overall, 24 to 23. That is enough to call, but not enough to treat as a blowout. This matchup comes down to a few meaningful edges rather than one model dominating the board.
Nemotron Ultra 253B's sharpest advantage is in reasoning, where it averages 45.9 against 21.7. The single biggest benchmark swing on the page is SimpleQA, 21.7% to 47%. Grok 3 Mini does hit back in knowledge, so the answer changes if that is the part of the workload you care about most.
Nemotron Ultra 253B is the reasoning model in the pair, while Grok 3 Mini 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 3 Mini gives you the larger context window at 128K, compared with 32K for Nemotron Ultra 253B.
Pick Nemotron Ultra 253B if you want the stronger benchmark profile. Grok 3 Mini only becomes the better choice if knowledge is the priority or you need the larger 128K context window.
Benchmark data for this category is coming soon.
Grok 3 Mini
41.5
Nemotron Ultra 253B
41
Benchmark data for this category is coming soon.
Grok 3 Mini
21.7
Nemotron Ultra 253B
45.9
Grok 3 Mini
74.1
Nemotron Ultra 253B
47
Benchmark data for this category is coming soon.
Benchmark data for this category is coming soon.
Grok 3 Mini
39.7
Nemotron Ultra 253B
48
Nemotron Ultra 253B is ahead overall, 24 to 23. The biggest single separator in this matchup is SimpleQA, where the scores are 21.7% and 47%.
Grok 3 Mini has the edge for knowledge tasks in this comparison, averaging 74.1 versus 47. Inside this category, GPQA is the benchmark that creates the most daylight between them.
Grok 3 Mini has the edge for coding in this comparison, averaging 41.5 versus 41. Nemotron Ultra 253B stays close enough that the answer can still flip depending on your workload.
Nemotron Ultra 253B has the edge for math in this comparison, averaging 48 versus 39.7. Inside this category, AIME 2024 is the benchmark that creates the most daylight between them.
Nemotron Ultra 253B has the edge for reasoning in this comparison, averaging 45.9 versus 21.7. Inside this category, SimpleQA is the benchmark that creates the most daylight between them.
Get notified when new models drop, benchmark scores change, or the leaderboard shifts. One email per week.
Free. No spam. Unsubscribe anytime. We only store derived location metadata for consent routing.