# DeepSeek V4 Flash vs Nemotron 3 Ultra

> DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 42.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-v4-flash-vs-nemotron-3-ultra
- Last updated: 2026-10-12
- Shared benchmarks: 29

## Summary

- They share 29 benchmarks with published results for both. DeepSeek V4 Flash scores higher in 5 categories and Nemotron 3 Ultra in 3 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in math, where DeepSeek V4 Flash leads 60.3 to 35.3.
- The biggest single-benchmark swing is ProofBench: 56% for DeepSeek V4 Flash and 2% for Nemotron 3 Ultra.
- DeepSeek V4 Flash is cheaper at $0.15 / $0.60 per million input/output tokens, against $0.60 / $2.40 for Nemotron 3 Ultra.
- DeepSeek V4 Flash accepts more context: 1M tokens versus 262K.

## Snapshot

| | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| Provider | DeepSeek | NVIDIA |
| Noometry Index | 53.6 | 42.5 |
| Rank | 35 | 113 |
| Context | 1M | 262K |
| Input $/M | $0.15 | $0.60 |
| Output $/M | $0.60 | $2.40 |
| Weights | Open | Open |

## Coding

- DeepSeek V4 Flash: 47.9 (#59)
- Nemotron 3 Ultra: 38.1 (#182)

| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| FrontierCode | 18.8% | 13.6% |
| SciCode | 49.9% | 40.3% |
| WeirdML | 63% | 43.5% |
| LMArena Coding | 1457 | 1468 |
| LMArena WebDev | 1582 | — |
| ALE-Bench | 1,306 | — |

## Agentic & Tool Use

- DeepSeek V4 Flash: —
- Nemotron 3 Ultra: 23.4 (#126)

| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| APEX-Agents | — | 22.7% |

## Reasoning

- DeepSeek V4 Flash: 53.7 (#30)
- Nemotron 3 Ultra: 31.0 (#82)

| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| CritPt | 16.6% | 3.1% |
| Chess Puzzles | 33% | 12% |
| LMArena Hard Prompts | 1444 | 1452 |
| Mystery Game Puzzles | 34% | 20% |
| DTBench | 90.9% | 90.1% |
| LMCA | 41.7% | 36.9% |
| Epoch Capabilities Index | 154.49 | 146.17 |
| ARC-AGI-2 | 61.4% | — |
| SimpleBench | 61.1% | — |
| Kagi LLM Benchmark | 52.2% | — |
| NYT Connections (extended) | 89.6% | — |
| ARC-AGI-1 | 89% | — |

## Math

- DeepSeek V4 Flash: 60.3 (#37)
- Nemotron 3 Ultra: 35.3 (#187)

| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| OTIS Mock AIME 2024-2025 | 94.4% | 86.7% |
| ProofBench | 56% | 2% |
| LMArena Math | 1427 | 1457 |
| FrontierMath (Tiers 1-3) | 57.5% | — |
| FrontierMath Tier 4 | 24.4% | — |
| MathArena Final-Answer Competitions | 76.5% | — |

## Knowledge

- DeepSeek V4 Flash: 55.4 (#48)
- Nemotron 3 Ultra: 52.5 (#61)

| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| GPQA Diamond | 91% | 85.4% |
| LMArena Expert | 1441 | 1472 |
| SimpleQA Verified | 33.6% | — |

## Multilingual

- DeepSeek V4 Flash: 53.0 (#72)
- Nemotron 3 Ultra: 53.5 (#64)

| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| LMArena Non-English | 1420 | 1427 |
| LMArena Chinese | 1468 | 1497 |
| LMArena French | 1439 | 1472 |
| LMArena German | 1418 | 1471 |
| LMArena Korean | 1384 | 1386 |
| LMArena Russian | 1428 | 1417 |
| LMArena Spanish | 1436 | 1454 |
| LMArena Japanese | 1406 | — |

## Instruction Following

- DeepSeek V4 Flash: 74.9 (#81)
- Nemotron 3 Ultra: 74.7 (#88)

| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| LMArena Instruction Following | 1421 | 1418 |

## Long Context

- DeepSeek V4 Flash: 43.8 (#85)
- Nemotron 3 Ultra: 43.9 (#81)

| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| LMArena Longer Query | 1434 | 1437 |

## Writing & Preference

- DeepSeek V4 Flash: 63.8 (#61)
- Nemotron 3 Ultra: 66.3 (#36)

| Benchmark | DeepSeek V4 Flash | Nemotron 3 Ultra |
|---|---|---|
| LMArena Text | 1432 | 1445 |
| LMArena Creative Writing | 1403 | 1398 |
| EQ-Bench Creative Writing | 1559 | 1692 |
| LMArena Multi-Turn | 1449 | 1411 |

## FAQ

### Is DeepSeek V4 Flash better than Nemotron 3 Ultra?

DeepSeek V4 Flash is the stronger model overall, scoring 53.6 to 42.5 on the Noometry Index.

### Which is cheaper, DeepSeek V4 Flash or Nemotron 3 Ultra?

DeepSeek V4 Flash is cheaper. It lists at $0.15 per million input tokens and $0.60 per million output tokens; Nemotron 3 Ultra lists at $0.60 and $2.40.

### Is DeepSeek V4 Flash or Nemotron 3 Ultra better for coding?

DeepSeek V4 Flash scores higher on coding benchmarks: 47.9 versus 38.1 in the Noometry coding category.

### Which has the bigger context window?

DeepSeek V4 Flash does, with 1M tokens against 262K.

### How many benchmarks do DeepSeek V4 Flash and Nemotron 3 Ultra share?

29 benchmarks have published results for both models. DeepSeek V4 Flash has 41 scored results on Noometry and Nemotron 3 Ultra has 30.