Model comparison
Longcat Flash Chat vs MiMo-V2.5
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 42.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Longcat Flash Chat scores higher in 1 category and MiMo-V2.5 in 7 categories; 3 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where MiMo-V2.5 leads 28.6 to 19.0.
Side by side
| Longcat Flash Chat | MiMo-V2.5 | |
|---|---|---|
| Provider | Meituan | Xiaomi |
| Noometry Index | 42.1 | 43.4 |
| Released | — | 2026-04-22 |
| Weights | Open | Open |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $0.14 |
| Output $ / M tokens | — | $0.28 |
| Results tracked | 19 | 23 |
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Category by category
Coding Too close to call
Longcat Flash Chat: 43.5 (#87), MiMo-V2.5: 43.9 (#81)
| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Coding | 1471 | 1469 |
| LMArena WebDev | — | 1438 |
| SciCode | — | 43.1% |
| ALE-Bench | — | 513.95 |
Reasoning MiMo-V2.5 leads
Longcat Flash Chat: 19.0 (#272), MiMo-V2.5: 28.6 (#101)
| 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 leads
Longcat Flash Chat: 39.4 (#107), MiMo-V2.5: 36.8 (#163)
| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Math | 1442 | 1436 |
| ProofBench | — | 16% |
Knowledge Too close to call
Longcat Flash Chat: 40.6 (#116), MiMo-V2.5: 40.8 (#115)
| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Expert | 1454 | 1460 |
Multimodal Not comparable
Longcat Flash Chat: —, MiMo-V2.5: 39.8 (#54)
| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Vision | — | 1247 |
Multilingual Too close to call
Longcat Flash Chat: 51.9 (#101), MiMo-V2.5: 51.9 (#99)
| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Non-English | 1404 | 1404 |
| LMArena Chinese | 1465 | 1468 |
| LMArena French | 1456 | 1447 |
| LMArena German | 1408 | 1421 |
| LMArena Japanese | 1373 | 1306 |
| LMArena Korean | 1371 | 1363 |
| LMArena Russian | 1395 | 1395 |
| LMArena Spanish | 1445 | 1416 |
Instruction Following MiMo-V2.5 leads
Longcat Flash Chat: 74.4 (#96), MiMo-V2.5: 75.5 (#60)
| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Instruction Following | 1411 | 1434 |
Long Context Too close to call
Longcat Flash Chat: 43.5 (#93), MiMo-V2.5: 44.2 (#73)
| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Longer Query | 1425 | 1445 |
Writing & Preference Too close to call
Longcat Flash Chat: 61.0 (#91), MiMo-V2.5: 61.6 (#86)
| Benchmark | Longcat Flash Chat | MiMo-V2.5 |
|---|---|---|
| LMArena Text | 1427 | 1428 |
| LMArena Creative Writing | 1388 | 1393 |
| LMArena Multi-Turn | 1418 | 1445 |
Frequently asked questions
Is Longcat Flash Chat better than MiMo-V2.5?
MiMo-V2.5 is the stronger model overall, scoring 43.4 to 42.1 on the Noometry Index.
Is Longcat Flash Chat or MiMo-V2.5 better for coding?
They score almost the same on coding (43.5 vs 43.9); 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.