# Deepseek Coder v2 vs Longcat Flash Chat

> Longcat Flash Chat is the stronger model overall, scoring 42.1 to 35.9 on the Noometry Index.

- Canonical page: https://noometry.com/compare/deepseek-coder-v2-vs-longcat-flash-chat
- Last updated: 2026-10-12
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Deepseek Coder v2 scores higher in 1 category and Longcat Flash Chat in 7 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Longcat Flash Chat leads 61.0 to 38.2.

## Snapshot

| | Deepseek Coder v2 | Longcat Flash Chat |
|---|---|---|
| Provider | DeepSeek | Meituan |
| Noometry Index | 35.9 | 42.1 |
| Rank | 220 | 120 |
| Context | — | — |
| Input $/M | — | — |
| Output $/M | — | — |
| Weights | Open | Open |

## Coding

- Deepseek Coder v2: 38.1 (#183)
- Longcat Flash Chat: 43.5 (#87)

| Benchmark | Deepseek Coder v2 | Longcat Flash Chat |
|---|---|---|
| LMArena Coding | 1251 | 1471 |
| BigCodeBench Instruct | 48.2% | — |
| BigCodeBench Complete | 59.7% | — |
| HumanEval+ | 82.3% | — |
| MBPP+ | 75.1% | — |

## Reasoning

- Deepseek Coder v2: 23.6 (#176)
- Longcat Flash Chat: 19.0 (#272)

| Benchmark | Deepseek Coder v2 | Longcat Flash Chat |
|---|---|---|
| LMArena Hard Prompts | 1207 | 1440 |
| Kagi LLM Benchmark | — | 43.9% |
| NYT Connections (extended) | — | 17.7% |
| WinoGrande | 83.7% | — |

## Math

- Deepseek Coder v2: 34.9 (#190)
- Longcat Flash Chat: 39.4 (#107)

| Benchmark | Deepseek Coder v2 | Longcat Flash Chat |
|---|---|---|
| LMArena Math | 1241 | 1442 |
| GSM8K | 94.5% | — |

## Knowledge

- Deepseek Coder v2: 32.3 (#212)
- Longcat Flash Chat: 40.6 (#116)

| Benchmark | Deepseek Coder v2 | Longcat Flash Chat |
|---|---|---|
| LMArena Expert | 1181 | 1454 |
| ARC (AI2) Challenge | 64.3% | — |

## Multilingual

- Deepseek Coder v2: 36.3 (#240)
- Longcat Flash Chat: 51.9 (#101)

| Benchmark | Deepseek Coder v2 | Longcat Flash Chat |
|---|---|---|
| LMArena Non-English | 1182 | 1404 |
| LMArena Chinese | 1201 | 1465 |
| LMArena French | 1185 | 1456 |
| LMArena German | 1164 | 1408 |
| LMArena Japanese | 1126 | 1373 |
| LMArena Korean | 1104 | 1371 |
| LMArena Russian | 1188 | 1395 |
| LMArena Spanish | 1153 | 1445 |

## Instruction Following

- Deepseek Coder v2: 61.7 (#242)
- Longcat Flash Chat: 74.4 (#96)

| Benchmark | Deepseek Coder v2 | Longcat Flash Chat |
|---|---|---|
| LMArena Instruction Following | 1180 | 1411 |

## Long Context

- Deepseek Coder v2: 37.0 (#224)
- Longcat Flash Chat: 43.5 (#93)

| Benchmark | Deepseek Coder v2 | Longcat Flash Chat |
|---|---|---|
| LMArena Longer Query | 1219 | 1425 |

## Writing & Preference

- Deepseek Coder v2: 38.2 (#253)
- Longcat Flash Chat: 61.0 (#91)

| Benchmark | Deepseek Coder v2 | Longcat Flash Chat |
|---|---|---|
| LMArena Text | 1191 | 1427 |
| LMArena Creative Writing | 1120 | 1388 |
| LMArena Multi-Turn | 1177 | 1418 |

## FAQ

### Is Deepseek Coder v2 better than Longcat Flash Chat?

Longcat Flash Chat is the stronger model overall, scoring 42.1 to 35.9 on the Noometry Index.

### Is Deepseek Coder v2 or Longcat Flash Chat 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 Deepseek Coder v2 and Longcat Flash Chat share?

17 benchmarks have published results for both models. Deepseek Coder v2 has 24 scored results on Noometry and Longcat Flash Chat has 19.