# Longcat Flash Chat vs MiMo-V2.5

> MiMo-V2.5 is the stronger model overall, scoring 43.0 to 41.5 on the Noometry Index.

- Canonical page: https://noometry.com/compare/longcat-flash-chat-vs-mimo-v2-5
- Last updated: 2026-10-10
- Shared benchmarks: 17

## Summary

- They share 17 benchmarks with published results for both. Longcat Flash Chat scores higher in 2 categories and MiMo-V2.5 in 6 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where MiMo-V2.5 leads 27.8 to 18.3.

## Snapshot

| | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| Provider | Meituan | Xiaomi |
| Noometry Index | 41.5 | 43.0 |
| Rank | 121 | 89 |
| Context | — | 1.05M |
| Input $/M | — | $0.14 |
| Output $/M | — | $0.28 |
| Weights | Open | Open |

## Coding

- Longcat Flash Chat: 42.9 (#85)
- MiMo-V2.5: 43.6 (#75)

| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Coding | 1471 | 1469 |
| LMArena WebDev | — | 1438 |
| SciCode | — | 43.1% |
| ALE-Bench | — | 513.95 |

## Reasoning

- Longcat Flash Chat: 18.3 (#267)
- MiMo-V2.5: 27.8 (#98)

| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Hard Prompts | 1440 | 1450 |
| Kagi LLM Benchmark | 43.9% | — |
| NYT Connections (extended) | 17.7% | — |
| CritPt | — | 3.7% |

## Math

- Longcat Flash Chat: 36.6 (#107)
- MiMo-V2.5: 35.4 (#145)

| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Math | 1441 | 1436 |
| ProofBench | — | 16% |

## Knowledge

- Longcat Flash Chat: 40.0 (#111)
- MiMo-V2.5: 40.2 (#109)

| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Expert | 1454 | 1459 |

## Multimodal

- Longcat Flash Chat: —
- MiMo-V2.5: 39.0 (#53)

| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Vision | — | 1245 |

## Multilingual

- Longcat Flash Chat: 52.1 (#95)
- MiMo-V2.5: 52.0 (#96)

| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Non-English | 1404 | 1404 |
| LMArena Chinese | 1465 | 1467 |
| LMArena French | 1457 | 1447 |
| LMArena German | 1409 | 1421 |
| LMArena Japanese | 1373 | 1304 |
| LMArena Korean | 1372 | 1363 |
| LMArena Russian | 1396 | 1395 |
| LMArena Spanish | 1445 | 1412 |

## Instruction Following

- Longcat Flash Chat: 74.6 (#92)
- MiMo-V2.5: 75.7 (#55)

| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Instruction Following | 1411 | 1433 |

## Long Context

- Longcat Flash Chat: 43.5 (#89)
- MiMo-V2.5: 44.1 (#69)

| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Longer Query | 1425 | 1444 |

## Writing & Preference

- Longcat Flash Chat: 61.2 (#88)
- MiMo-V2.5: 61.8 (#82)

| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Text | 1427 | 1427 |
| LMArena Creative Writing | 1388 | 1392 |
| LMArena Multi-Turn | 1418 | 1445 |

## FAQ

### Is Longcat Flash Chat better than MiMo-V2.5?

MiMo-V2.5 is the stronger model overall, scoring 43.0 to 41.5 on the Noometry Index.

### Is Longcat Flash Chat or MiMo-V2.5 better for coding?

They score almost the same on coding (42.9 vs 43.6); test both on your own repository before choosing.

### How many benchmarks do Longcat Flash Chat and MiMo-V2.5 share?

17 benchmarks have published results for both models. Longcat Flash Chat has 19 scored results on Noometry and MiMo-V2.5 has 23.