# Grok 4 Fast vs Nemotron 3 Super

> Grok 4 Fast and Nemotron 3 Super score almost the same on the Noometry Index (39.0 vs 39.6), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/grok-4-fast-vs-nemotron-3-super
- Last updated: 2026-10-10
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. Grok 4 Fast scores higher in 5 categories and Nemotron 3 Super in 3 categories; 8 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.

## Snapshot

| | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| Provider | xAI | NVIDIA |
| Noometry Index | 39.0 | 39.6 |
| Rank | 164 | 147 |
| Context | — | 262K |
| Input $/M | — | $0.08 |
| Output $/M | — | $0.45 |
| Weights | Proprietary | Open |

## Coding

- Grok 4 Fast: 32.3 (#264)
- Nemotron 3 Super: 38.9 (#153)

| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| WeirdML | 42.9% | 38% |
| LMArena Coding | 1429 | 1403 |
| LMArena WebDev | 1160 | — |
| SciCode | — | 36% |
| ALE-Bench | — | 213.9 |

## Agentic & Tool Use

- Grok 4 Fast: 29.3 (#80)
- Nemotron 3 Super: —

| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| τ²-bench Banking | 15.7% | — |
| Cybench | 30% | — |
| LMArena Search | 1171 | — |

## Reasoning

- Grok 4 Fast: 22.5 (#179)
- Nemotron 3 Super: 17.9 (#274)

| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Hard Prompts | 1413 | 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 | 144.21 | — |
| ForecastBench | 60.5 | — |

## Math

- Grok 4 Fast: 36.1 (#126)
- Nemotron 3 Super: 37.6 (#95)

| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Math | 1419 | 1381 |
| MathArena Final-Answer Competitions | — | 60.4% |

## Knowledge

- Grok 4 Fast: 31.5 (#211)
- Nemotron 3 Super: 38.2 (#136)

| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Expert | 1411 | 1397 |
| Vectara Hallucination Rate | 19.7% | — |

## Multilingual

- Grok 4 Fast: 51.5 (#106)
- Nemotron 3 Super: 48.6 (#139)

| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Non-English | 1397 | 1356 |
| LMArena Chinese | 1458 | 1430 |
| LMArena French | 1433 | 1404 |
| LMArena German | 1383 | 1341 |
| LMArena Russian | 1387 | 1336 |
| LMArena Spanish | 1414 | 1417 |
| LMArena Japanese | 1358 | — |
| LMArena Korean | 1359 | — |

## Instruction Following

- Grok 4 Fast: 73.4 (#116)
- Nemotron 3 Super: 71.4 (#149)

| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Instruction Following | 1388 | 1347 |

## Long Context

- Grok 4 Fast: 63.2 (#3)
- Nemotron 3 Super: 41.5 (#134)

| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Longer Query | 1415 | 1362 |
| Fiction.LiveBench | 94.4% | — |

## Writing & Preference

- Grok 4 Fast: 60.2 (#96)
- Nemotron 3 Super: 56.1 (#135)

| Benchmark | Grok 4 Fast | Nemotron 3 Super |
|---|---|---|
| LMArena Text | 1407 | 1378 |
| LMArena Creative Writing | 1388 | 1317 |
| LMArena Multi-Turn | 1414 | 1369 |

## FAQ

### Is Grok 4 Fast better than Nemotron 3 Super?

Grok 4 Fast and Nemotron 3 Super score almost the same on the Noometry Index (39.0 vs 39.6), 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: 38.9 versus 32.3 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.