Model comparison
Grok 4.1 vs Nemotron 3 Ultra
Nemotron 3 Ultra is the stronger model overall, scoring 42.5 to 41.5 on the Noometry Index.
Last verified . 16 shared benchmarks.
NVIDIASummary
- They share 16 benchmarks with published results for both. Grok 4.1 scores higher in 2 categories and Nemotron 3 Ultra in 7 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in knowledge, where Nemotron 3 Ultra leads 52.5 to 39.5.
- Nemotron 3 Ultra has downloadable open weights; the other is API-only.
Side by side
| Grok 4.1 | Nemotron 3 Ultra | |
|---|---|---|
| Provider | xAI | NVIDIA |
| Noometry Index | 41.5 | 42.5 |
| Released | 2025-11-17 | 2026-06-04 |
| Weights | Proprietary | Open |
| Context window | — | 262K |
| Max output | — | 128K |
| Input $ / M tokens | — | $0.60 |
| Output $ / M tokens | — | $2.40 |
| Results tracked | 19 | 30 |
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Category by category
Coding Nemotron 3 Ultra leads
Grok 4.1: 33.7 (#253), Nemotron 3 Ultra: 38.1 (#182)
| Benchmark | Grok 4.1 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Coding | 1445 | 1468 |
| FrontierCode | — | 13.6% |
| LMArena WebDev | 1214 | — |
| SciCode | — | 40.3% |
| WeirdML | — | 43.5% |
Agentic & Tool Use Grok 4.1 leads
Grok 4.1: 34.1 (#49), Nemotron 3 Ultra: 23.4 (#126)
| Benchmark | Grok 4.1 | Nemotron 3 Ultra |
|---|---|---|
| APEX-Agents | — | 22.7% |
| Cybench | 39% | — |
Reasoning Nemotron 3 Ultra leads
Grok 4.1: 29.5 (#91), Nemotron 3 Ultra: 31.0 (#82)
| Benchmark | Grok 4.1 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Hard Prompts | 1435 | 1452 |
| CritPt | — | 3.1% |
| Chess Puzzles | — | 12% |
| Mystery Game Puzzles | — | 20% |
| DTBench | — | 90.1% |
| LMCA | — | 36.9% |
| Epoch Capabilities Index | — | 146.17 |
Math Grok 4.1 leads
Grok 4.1: 38.9 (#120), Nemotron 3 Ultra: 35.3 (#187)
| Benchmark | Grok 4.1 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Math | 1422 | 1457 |
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| ProofBench | — | 2% |
Knowledge Nemotron 3 Ultra leads
Grok 4.1: 39.5 (#133), Nemotron 3 Ultra: 52.5 (#61)
| Benchmark | Grok 4.1 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Expert | 1417 | 1472 |
| GPQA Diamond | — | 85.4% |
Multilingual Too close to call
Grok 4.1: 53.4 (#68), Nemotron 3 Ultra: 53.5 (#64)
| Benchmark | Grok 4.1 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Non-English | 1425 | 1427 |
| LMArena Chinese | 1465 | 1497 |
| LMArena French | 1448 | 1472 |
| LMArena German | 1446 | 1471 |
| LMArena Korean | 1407 | 1386 |
| LMArena Russian | 1434 | 1417 |
| LMArena Spanish | 1438 | 1454 |
| LMArena Japanese | 1397 | — |
Instruction Following Too close to call
Grok 4.1: 73.8 (#111), Nemotron 3 Ultra: 74.7 (#88)
| Benchmark | Grok 4.1 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Instruction Following | 1400 | 1418 |
Long Context Too close to call
Grok 4.1: 43.2 (#100), Nemotron 3 Ultra: 43.9 (#81)
| Benchmark | Grok 4.1 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Longer Query | 1416 | 1437 |
Writing & Preference Nemotron 3 Ultra leads
Grok 4.1: 62.4 (#75), Nemotron 3 Ultra: 66.3 (#36)
| Benchmark | Grok 4.1 | Nemotron 3 Ultra |
|---|---|---|
| LMArena Text | 1437 | 1445 |
| LMArena Creative Writing | 1411 | 1398 |
| LMArena Multi-Turn | 1437 | 1411 |
| EQ-Bench Creative Writing | — | 1692 |
Frequently asked questions
Is Grok 4.1 better than Nemotron 3 Ultra?
Nemotron 3 Ultra is the stronger model overall, scoring 42.5 to 41.5 on the Noometry Index.
Is Grok 4.1 or Nemotron 3 Ultra better for coding?
Nemotron 3 Ultra scores higher on coding benchmarks: 38.1 versus 33.7 in the Noometry coding category.
How many benchmarks do Grok 4.1 and Nemotron 3 Ultra share?
16 benchmarks have published results for both models. Grok 4.1 has 19 scored results on Noometry and Nemotron 3 Ultra has 30.