Model comparison
Grok 4 Fast vs Nemotron 3 Super
Grok 4 Fast and Nemotron 3 Super score almost the same on the Noometry Index (39.4 vs 40.1), so choose on price, context window or the category you care about most.
Last verified . 16 shared benchmarks.
NVIDIASummary
- They share 16 benchmarks with published results for both. Grok 4 Fast scores higher in 5 categories and Nemotron 3 Super in 3 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in long context, where Grok 4 Fast leads 63.2 to 41.5.
- Nemotron 3 Super has downloadable open weights; the other is API-only.
Side by side
| Grok 4 Fast | Nemotron 3 Super | |
|---|---|---|
| Provider | xAI | NVIDIA |
| Noometry Index | 39.4 | 40.1 |
| Released | 2025-09-19 | 2026-03-11 |
| Weights | Proprietary | Open |
| Context window | — | 262K |
| Max output | — | 131K |
| Input $ / M tokens | — | $0.08 |
| Output $ / M tokens | — | $0.45 |
| Results tracked | 30 | 21 |
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Category by category
Coding Nemotron 3 Super leads
Grok 4 Fast: 32.5 (#271), Nemotron 3 Super: 39.4 (#158)
| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| WeirdML | 42.9% | 38% |
| LMArena Coding | 1429 | 1403 |
| LMArena WebDev | 1159 | — |
| SciCode | — | 36% |
| ALE-Bench | — | 213.9 |
Agentic & Tool Use Not comparable
Grok 4 Fast: 29.5 (#86), Nemotron 3 Super: —
| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| τ²-bench Banking | 15.7% | — |
| Cybench | 30% | — |
| LMArena Search | 1171 | — |
Reasoning Grok 4 Fast leads
Grok 4 Fast: 22.2 (#201), Nemotron 3 Super: 18.7 (#276)
| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Hard Prompts | 1412 | 1386 |
| ARC-AGI-2 | 5.3% | — |
| Kagi LLM Benchmark | 66.1% | — |
| NYT Connections (extended) | — | 15.4% |
| ARC-AGI-1 | 48.5% | — |
| CritPt | — | 3.1% |
| DTBench | 82.7% | — |
| Epoch Capabilities Index | 144.2 | — |
| ForecastBench | 60.5 | — |
Math Too close to call
Grok 4 Fast: 38.9 (#123), Nemotron 3 Super: 39.6 (#101)
| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Math | 1419 | 1380 |
| MathArena Final-Answer Competitions | — | 60.4% |
Knowledge Nemotron 3 Super leads
Grok 4 Fast: 32.0 (#214), Nemotron 3 Super: 38.9 (#139)
| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Expert | 1411 | 1398 |
| Vectara Hallucination Rate | 19.7% | — |
Multilingual Grok 4 Fast leads
Grok 4 Fast: 51.3 (#111), Nemotron 3 Super: 48.4 (#144)
| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Non-English | 1396 | 1355 |
| LMArena Chinese | 1457 | 1432 |
| LMArena French | 1431 | 1405 |
| LMArena German | 1383 | 1341 |
| LMArena Russian | 1389 | 1336 |
| LMArena Spanish | 1415 | 1417 |
| LMArena Japanese | 1352 | — |
| LMArena Korean | 1357 | — |
Instruction Following Grok 4 Fast leads
Grok 4 Fast: 73.2 (#121), Nemotron 3 Super: 71.2 (#154)
| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Instruction Following | 1387 | 1347 |
Long Context Grok 4 Fast leads
Grok 4 Fast: 63.2 (#3), Nemotron 3 Super: 41.5 (#139)
| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Longer Query | 1415 | 1362 |
| Fiction.LiveBench | 94.4% | — |
Writing & Preference Grok 4 Fast leads
Grok 4 Fast: 60.0 (#102), Nemotron 3 Super: 55.9 (#140)
| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Text | 1407 | 1378 |
| LMArena Creative Writing | 1387 | 1317 |
| LMArena Multi-Turn | 1414 | 1369 |
Frequently asked questions
Is Grok 4 Fast better than Nemotron 3 Super?
Grok 4 Fast and Nemotron 3 Super score almost the same on the Noometry Index (39.4 vs 40.1), so choose on price, context window or the category you care about most.
Is Grok 4 Fast or Nemotron 3 Super better for coding?
Nemotron 3 Super scores higher on coding benchmarks: 39.4 versus 32.5 in the Noometry coding category.
How many benchmarks do Grok 4 Fast and Nemotron 3 Super share?
16 benchmarks have published results for both models. Grok 4 Fast has 30 scored results on Noometry and Nemotron 3 Super has 21.