# Longcat Flash Chat vs Nemotron 3 Ultra

> Longcat Flash Chat and Nemotron 3 Ultra score almost the same on the Noometry Index (42.1 vs 42.5), so choose on price, context window or the category you care about most.

- Canonical page: https://noometry.com/compare/longcat-flash-chat-vs-nemotron-3-ultra
- Last updated: 2026-10-10
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. Longcat Flash Chat scores higher in 2 categories and Nemotron 3 Ultra in 6 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Nemotron 3 Ultra leads 31.0 to 19.0.

## Snapshot

| | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| Provider | Meituan | NVIDIA |
| Noometry Index | 42.1 | 42.5 |
| Rank | 120 | 113 |
| Context | — | 262K |
| Input $/M | — | $0.50 |
| Output $/M | — | $2.20 |
| Weights | Open | Open |

## Coding

- Longcat Flash Chat: 43.5 (#87)
- Nemotron 3 Ultra: 38.1 (#182)

| Benchmark | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| LMArena Coding | 1471 | 1468 |
| FrontierCode | — | 13.6% |
| SciCode | — | 40.3% |
| WeirdML | — | 43.5% |

## Agentic & Tool Use

- Longcat Flash Chat: —
- Nemotron 3 Ultra: 23.4 (#126)

| Benchmark | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| APEX-Agents | — | 22.7% |

## Reasoning

- Longcat Flash Chat: 19.0 (#272)
- Nemotron 3 Ultra: 31.0 (#82)

| Benchmark | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| LMArena Hard Prompts | 1440 | 1452 |
| Kagi LLM Benchmark | 43.9% | — |
| NYT Connections (extended) | 17.7% | — |
| CritPt | — | 3.1% |
| Chess Puzzles | — | 12% |
| Mystery Game Puzzles | — | 20% |
| DTBench | — | 90.1% |
| LMCA | — | 36.9% |
| Epoch Capabilities Index | — | 146.17 |

## Math

- Longcat Flash Chat: 39.4 (#107)
- Nemotron 3 Ultra: 35.3 (#187)

| Benchmark | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| LMArena Math | 1442 | 1457 |
| OTIS Mock AIME 2024-2025 | — | 86.7% |
| ProofBench | — | 2% |

## Knowledge

- Longcat Flash Chat: 40.6 (#116)
- Nemotron 3 Ultra: 52.5 (#61)

| Benchmark | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| LMArena Expert | 1454 | 1472 |
| GPQA Diamond | — | 85.4% |

## Multilingual

- Longcat Flash Chat: 51.9 (#101)
- Nemotron 3 Ultra: 53.5 (#64)

| Benchmark | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| LMArena Non-English | 1404 | 1427 |
| LMArena Chinese | 1465 | 1497 |
| LMArena French | 1456 | 1472 |
| LMArena German | 1408 | 1471 |
| LMArena Korean | 1371 | 1386 |
| LMArena Russian | 1395 | 1417 |
| LMArena Spanish | 1445 | 1454 |
| LMArena Japanese | 1373 | — |

## Instruction Following

- Longcat Flash Chat: 74.4 (#96)
- Nemotron 3 Ultra: 74.7 (#88)

| Benchmark | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| LMArena Instruction Following | 1411 | 1418 |

## Long Context

- Longcat Flash Chat: 43.5 (#93)
- Nemotron 3 Ultra: 43.9 (#81)

| Benchmark | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| LMArena Longer Query | 1425 | 1437 |

## Writing & Preference

- Longcat Flash Chat: 61.0 (#91)
- Nemotron 3 Ultra: 66.3 (#36)

| Benchmark | Longcat Flash Chat | Nemotron 3 Ultra |
|---|---|---|
| LMArena Text | 1427 | 1445 |
| LMArena Creative Writing | 1388 | 1398 |
| LMArena Multi-Turn | 1418 | 1411 |
| EQ-Bench Creative Writing | — | 1692 |

## FAQ

### Is Longcat Flash Chat better than Nemotron 3 Ultra?

Longcat Flash Chat and Nemotron 3 Ultra score almost the same on the Noometry Index (42.1 vs 42.5), so choose on price, context window or the category you care about most.

### Is Longcat Flash Chat or Nemotron 3 Ultra better for coding?

Longcat Flash Chat scores higher on coding benchmarks: 43.5 versus 38.1 in the Noometry coding category.

### How many benchmarks do Longcat Flash Chat and Nemotron 3 Ultra share?

16 benchmarks have published results for both models. Longcat Flash Chat has 19 scored results on Noometry and Nemotron 3 Ultra has 30.