Model comparison
Longcat Flash Chat vs MiMo-V2.5-Pro
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 42.1 on the Noometry Index.
Last verified . 18 shared benchmarks.
Summary
- They share 18 benchmarks with published results for both. Longcat Flash Chat scores higher in 0 categories and MiMo-V2.5-Pro in 8 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where MiMo-V2.5-Pro leads 26.8 to 19.0.
- The biggest single-benchmark swing is NYT Connections (extended): 17.7% for Longcat Flash Chat and 34.4% for MiMo-V2.5-Pro.
Side by side
| Longcat Flash Chat | MiMo-V2.5-Pro | |
|---|---|---|
| Provider | Meituan | Xiaomi |
| Noometry Index | 42.1 | 45.2 |
| Released | — | 2026-04-22 |
| Weights | Open | Open |
| Context window | — | 1.05M |
| Max output | — | 131K |
| Input $ / M tokens | — | $0.43 |
| Output $ / M tokens | — | $0.87 |
| Results tracked | 19 | 27 |
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Category by category
Coding MiMo-V2.5-Pro leads
Longcat Flash Chat: 43.5 (#87), MiMo-V2.5-Pro: 47.4 (#60)
| Benchmark | Longcat Flash Chat | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Coding | 1471 | 1503 |
| LMArena WebDev | — | 1479 |
| SciCode | — | 50.2% |
| ALE-Bench | — | 899.8 |
Reasoning MiMo-V2.5-Pro leads
Longcat Flash Chat: 19.0 (#272), MiMo-V2.5-Pro: 26.8 (#130)
| Benchmark | Longcat Flash Chat | MiMo-V2.5-Pro |
|---|---|---|
| NYT Connections (extended) | 17.7% | 34.4% |
| LMArena Hard Prompts | 1440 | 1488 |
| Kagi LLM Benchmark | 43.9% | — |
| CritPt | — | 4% |
| DTBench | — | 84.5% |
| LMCA | — | 29.5% |
Math Too close to call
Longcat Flash Chat: 39.4 (#107), MiMo-V2.5-Pro: 40.0 (#96)
| Benchmark | Longcat Flash Chat | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Math | 1442 | 1481 |
| ProofBench | — | 22% |
Knowledge MiMo-V2.5-Pro leads
Longcat Flash Chat: 40.6 (#116), MiMo-V2.5-Pro: 42.2 (#98)
| Benchmark | Longcat Flash Chat | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Expert | 1454 | 1503 |
Multilingual MiMo-V2.5-Pro leads
Longcat Flash Chat: 51.9 (#101), MiMo-V2.5-Pro: 55.1 (#34)
| Benchmark | Longcat Flash Chat | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Non-English | 1404 | 1449 |
| LMArena Chinese | 1465 | 1507 |
| LMArena French | 1456 | 1488 |
| LMArena German | 1408 | 1458 |
| LMArena Japanese | 1373 | 1412 |
| LMArena Korean | 1371 | 1437 |
| LMArena Russian | 1395 | 1450 |
| LMArena Spanish | 1445 | 1471 |
Instruction Following MiMo-V2.5-Pro leads
Longcat Flash Chat: 74.4 (#96), MiMo-V2.5-Pro: 77.5 (#21)
| Benchmark | Longcat Flash Chat | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Instruction Following | 1411 | 1477 |
Long Context MiMo-V2.5-Pro leads
Longcat Flash Chat: 43.5 (#93), MiMo-V2.5-Pro: 45.4 (#37)
| Benchmark | Longcat Flash Chat | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Longer Query | 1425 | 1483 |
Writing & Preference MiMo-V2.5-Pro leads
Longcat Flash Chat: 61.0 (#91), MiMo-V2.5-Pro: 65.3 (#49)
| Benchmark | Longcat Flash Chat | MiMo-V2.5-Pro |
|---|---|---|
| LMArena Text | 1427 | 1465 |
| LMArena Creative Writing | 1388 | 1440 |
| LMArena Multi-Turn | 1418 | 1477 |
| EQ-Bench Creative Writing | — | 1493 |
| EQ-Bench 4 | — | 1208 |
Frequently asked questions
Is Longcat Flash Chat better than MiMo-V2.5-Pro?
MiMo-V2.5-Pro is the stronger model overall, scoring 45.2 to 42.1 on the Noometry Index.
Is Longcat Flash Chat or MiMo-V2.5-Pro better for coding?
MiMo-V2.5-Pro scores higher on coding benchmarks: 47.4 versus 43.5 in the Noometry coding category.
How many benchmarks do Longcat Flash Chat and MiMo-V2.5-Pro share?
18 benchmarks have published results for both models. Longcat Flash Chat has 19 scored results on Noometry and MiMo-V2.5-Pro has 27.