# Longcat Flash Chat vs Step 3.7 Flash

> Longcat Flash Chat is the stronger model overall, scoring 42.1 to 37.3 on the Noometry Index.

- Canonical page: https://noometry.com/compare/longcat-flash-chat-vs-step-3-7-flash
- Last updated: 2026-10-11
- Shared benchmarks: 1

## Summary

- They share 1 benchmark with published results for both. Longcat Flash Chat scores higher in 1 category and Step 3.7 Flash in 2 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in math, where Step 3.7 Flash leads 42.9 to 39.4.
- The biggest single-benchmark swing is NYT Connections (extended): 17.7% for Longcat Flash Chat and 39.7% for Step 3.7 Flash.

## Snapshot

| | Longcat Flash Chat | Step 3.7 Flash |
|---|---|---|
| Provider | Meituan | StepFun |
| Noometry Index | 42.1 | 37.3 |
| Rank | 120 | 207 |
| Context | — | 256K |
| Input $/M | — | $0.18 |
| Output $/M | — | $1.11 |
| Weights | Open | Open |

## Coding

- Longcat Flash Chat: 43.5 (#87)
- Step 3.7 Flash: 40.0 (#150)

| Benchmark | Longcat Flash Chat | Step 3.7 Flash |
|---|---|---|
| SciCode | — | 40% |
| LMArena Coding | 1471 | — |
| ALE-Bench | — | 694.12 |

## Reasoning

- Longcat Flash Chat: 19.0 (#272)
- Step 3.7 Flash: 21.6 (#219)

| Benchmark | Longcat Flash Chat | Step 3.7 Flash |
|---|---|---|
| NYT Connections (extended) | 17.7% | 39.7% |
| Kagi LLM Benchmark | 43.9% | — |
| CritPt | — | 2.3% |
| LMArena Hard Prompts | 1440 | — |

## Math

- Longcat Flash Chat: 39.4 (#107)
- Step 3.7 Flash: 42.9 (#82)

| Benchmark | Longcat Flash Chat | Step 3.7 Flash |
|---|---|---|
| MathArena Final-Answer Competitions | — | 68.5% |
| LMArena Math | 1442 | — |

## Knowledge

- Longcat Flash Chat: 40.6 (#116)
- Step 3.7 Flash: —

| Benchmark | Longcat Flash Chat | Step 3.7 Flash |
|---|---|---|
| LMArena Expert | 1454 | — |

## Multilingual

- Longcat Flash Chat: 51.9 (#101)
- Step 3.7 Flash: —

| Benchmark | Longcat Flash Chat | Step 3.7 Flash |
|---|---|---|
| LMArena Non-English | 1404 | — |
| LMArena Chinese | 1465 | — |
| LMArena French | 1456 | — |
| LMArena German | 1408 | — |
| LMArena Japanese | 1373 | — |
| LMArena Korean | 1371 | — |
| LMArena Russian | 1395 | — |
| LMArena Spanish | 1445 | — |

## Instruction Following

- Longcat Flash Chat: 74.4 (#96)
- Step 3.7 Flash: —

| Benchmark | Longcat Flash Chat | Step 3.7 Flash |
|---|---|---|
| LMArena Instruction Following | 1411 | — |

## Long Context

- Longcat Flash Chat: 43.5 (#93)
- Step 3.7 Flash: —

| Benchmark | Longcat Flash Chat | Step 3.7 Flash |
|---|---|---|
| LMArena Longer Query | 1425 | — |

## Writing & Preference

- Longcat Flash Chat: 61.0 (#91)
- Step 3.7 Flash: —

| Benchmark | Longcat Flash Chat | Step 3.7 Flash |
|---|---|---|
| LMArena Text | 1427 | — |
| LMArena Creative Writing | 1388 | — |
| LMArena Multi-Turn | 1418 | — |

## FAQ

### Is Longcat Flash Chat better than Step 3.7 Flash?

Longcat Flash Chat is the stronger model overall, scoring 42.1 to 37.3 on the Noometry Index.

### Is Longcat Flash Chat or Step 3.7 Flash better for coding?

Longcat Flash Chat scores higher on coding benchmarks: 43.5 versus 40.0 in the Noometry coding category.

### How many benchmarks do Longcat Flash Chat and Step 3.7 Flash share?

1 benchmark has published results for both models. Longcat Flash Chat has 19 scored results on Noometry and Step 3.7 Flash has 5.