# Longcat Flash Chat vs Step 3

> Longcat Flash Chat is the stronger model overall, scoring 42.1 to 40.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/longcat-flash-chat-vs-step-3
- Last updated: 2026-10-11
- Shared benchmarks: 16

## Summary

- They share 16 benchmarks with published results for both. Longcat Flash Chat scores higher in 7 categories and Step 3 in 1 category; 8 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Step 3 leads 28.4 to 19.0.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 43.9% for Longcat Flash Chat and 62.3% for Step 3.

## Snapshot

| | Longcat Flash Chat | Step 3 |
|---|---|---|
| Provider | Meituan | StepFun |
| Noometry Index | 42.1 | 40.5 |
| Rank | 120 | 149 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Open |

## Coding

- Longcat Flash Chat: 43.5 (#87)
- Step 3: 40.1 (#147)

| Benchmark | Longcat Flash Chat | Step 3 |
|---|---|---|
| LMArena Coding | 1471 | 1367 |

## Reasoning

- Longcat Flash Chat: 19.0 (#272)
- Step 3: 28.4 (#105)

| Benchmark | Longcat Flash Chat | Step 3 |
|---|---|---|
| Kagi LLM Benchmark | 43.9% | 62.3% |
| LMArena Hard Prompts | 1440 | 1355 |
| NYT Connections (extended) | 17.7% | — |

## Math

- Longcat Flash Chat: 39.4 (#107)
- Step 3: 37.6 (#148)

| Benchmark | Longcat Flash Chat | Step 3 |
|---|---|---|
| LMArena Math | 1442 | 1366 |

## Knowledge

- Longcat Flash Chat: 40.6 (#116)
- Step 3: 36.8 (#164)

| Benchmark | Longcat Flash Chat | Step 3 |
|---|---|---|
| LMArena Expert | 1454 | 1333 |

## Multimodal

- Longcat Flash Chat: —
- Step 3: 35.5 (#86)

| Benchmark | Longcat Flash Chat | Step 3 |
|---|---|---|
| LMArena Vision | — | 1177 |

## Multilingual

- Longcat Flash Chat: 51.9 (#101)
- Step 3: 46.3 (#159)

| Benchmark | Longcat Flash Chat | Step 3 |
|---|---|---|
| LMArena Non-English | 1404 | 1327 |
| LMArena Chinese | 1465 | 1397 |
| LMArena German | 1408 | 1371 |
| LMArena Korean | 1371 | 1269 |
| LMArena Russian | 1395 | 1331 |
| LMArena Spanish | 1445 | 1371 |
| LMArena French | 1456 | — |
| LMArena Japanese | 1373 | — |

## Instruction Following

- Longcat Flash Chat: 74.4 (#96)
- Step 3: 70.4 (#164)

| Benchmark | Longcat Flash Chat | Step 3 |
|---|---|---|
| LMArena Instruction Following | 1411 | 1332 |

## Long Context

- Longcat Flash Chat: 43.5 (#93)
- Step 3: 40.3 (#157)

| Benchmark | Longcat Flash Chat | Step 3 |
|---|---|---|
| LMArena Longer Query | 1425 | 1326 |

## Writing & Preference

- Longcat Flash Chat: 61.0 (#91)
- Step 3: 54.3 (#151)

| Benchmark | Longcat Flash Chat | Step 3 |
|---|---|---|
| LMArena Text | 1427 | 1350 |
| LMArena Creative Writing | 1388 | 1321 |
| LMArena Multi-Turn | 1418 | 1341 |

## FAQ

### Is Longcat Flash Chat better than Step 3?

Longcat Flash Chat is the stronger model overall, scoring 42.1 to 40.5 on the Noometry Index.

### Is Longcat Flash Chat or Step 3 better for coding?

Longcat Flash Chat scores higher on coding benchmarks: 43.5 versus 40.1 in the Noometry coding category.

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

16 benchmarks have published results for both models. Longcat Flash Chat has 19 scored results on Noometry and Step 3 has 17.