Model comparison
Longcat Flash Chat vs Qwen3.5 Max Preview
Qwen3.5 Max Preview is the stronger model overall, scoring 45.3 to 42.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Alibaba (Qwen)Summary
- They share 17 benchmarks with published results for both. Longcat Flash Chat scores higher in 0 categories and Qwen3.5 Max Preview in 8 categories; 6 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Qwen3.5 Max Preview leads 30.8 to 19.0.
- Longcat Flash Chat has downloadable open weights; the other is API-only.
Side by side
| Longcat Flash Chat | Qwen3.5 Max Preview | |
|---|---|---|
| Provider | Meituan | Alibaba (Qwen) |
| Noometry Index | 42.1 | 45.3 |
| Released | — | — |
| Weights | Open | Proprietary |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 19 | 17 |
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Category by category
Coding Too close to call
Longcat Flash Chat: 43.5 (#87), Qwen3.5 Max Preview: 44.0 (#77)
| Benchmark | Longcat Flash Chat | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Coding | 1471 | 1487 |
Reasoning Qwen3.5 Max Preview leads
Longcat Flash Chat: 19.0 (#272), Qwen3.5 Max Preview: 30.8 (#84)
| Benchmark | Longcat Flash Chat | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Hard Prompts | 1440 | 1483 |
| Kagi LLM Benchmark | 43.9% | — |
| NYT Connections (extended) | 17.7% | — |
Math Too close to call
Longcat Flash Chat: 39.4 (#107), Qwen3.5 Max Preview: 40.1 (#94)
| Benchmark | Longcat Flash Chat | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Math | 1442 | 1474 |
Knowledge Qwen3.5 Max Preview leads
Longcat Flash Chat: 40.6 (#116), Qwen3.5 Max Preview: 41.8 (#107)
| Benchmark | Longcat Flash Chat | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Expert | 1454 | 1489 |
Multilingual Qwen3.5 Max Preview leads
Longcat Flash Chat: 51.9 (#101), Qwen3.5 Max Preview: 56.2 (#22)
| Benchmark | Longcat Flash Chat | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Non-English | 1404 | 1465 |
| LMArena Chinese | 1465 | 1534 |
| LMArena French | 1456 | 1484 |
| LMArena German | 1408 | 1487 |
| LMArena Japanese | 1373 | 1495 |
| LMArena Korean | 1371 | 1438 |
| LMArena Russian | 1395 | 1471 |
| LMArena Spanish | 1445 | 1470 |
Instruction Following Qwen3.5 Max Preview leads
Longcat Flash Chat: 74.4 (#96), Qwen3.5 Max Preview: 77.0 (#31)
| Benchmark | Longcat Flash Chat | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Instruction Following | 1411 | 1467 |
Long Context Qwen3.5 Max Preview leads
Longcat Flash Chat: 43.5 (#93), Qwen3.5 Max Preview: 45.2 (#45)
| Benchmark | Longcat Flash Chat | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Longer Query | 1425 | 1476 |
Writing & Preference Qwen3.5 Max Preview leads
Longcat Flash Chat: 61.0 (#91), Qwen3.5 Max Preview: 66.0 (#41)
| Benchmark | Longcat Flash Chat | Qwen3.5 Max Preview |
|---|---|---|
| LMArena Text | 1427 | 1470 |
| LMArena Creative Writing | 1388 | 1464 |
| LMArena Multi-Turn | 1418 | 1478 |
Frequently asked questions
Is Longcat Flash Chat better than Qwen3.5 Max Preview?
Qwen3.5 Max Preview is the stronger model overall, scoring 45.3 to 42.1 on the Noometry Index.
Is Longcat Flash Chat or Qwen3.5 Max Preview better for coding?
They score almost the same on coding (43.5 vs 44.0); test both on your own repository before choosing.
How many benchmarks do Longcat Flash Chat and Qwen3.5 Max Preview share?
17 benchmarks have published results for both models. Longcat Flash Chat has 19 scored results on Noometry and Qwen3.5 Max Preview has 17.