Model comparison
Devstral Small 2505 vs Longcat Flash Chat
Longcat Flash Chat is the stronger model overall, scoring 42.1 to 34.3 on the Noometry Index.
Last verified . 1 shared benchmarks.
Mistral AISummary
- They share 1 benchmark with published results for both. Devstral Small 2505 scores higher in 1 category and Longcat Flash Chat in 1 category; one gap is clear of the uncertainty.
- The widest gap is in coding, where Longcat Flash Chat leads 43.5 to 38.9.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 37.7% for Devstral Small 2505 and 43.9% for Longcat Flash Chat.
Side by side
| Devstral Small 2505 | Longcat Flash Chat | |
|---|---|---|
| Provider | Mistral AI | Meituan |
| Noometry Index | 34.3 | 42.1 |
| Released | 2025-05-07 | — |
| Weights | Open | Open |
| Context window | 128K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.10 | — |
| Output $ / M tokens | $0.30 | — |
| Results tracked | 4 | 19 |
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Category by category
Coding Longcat Flash Chat leads
Devstral Small 2505: 38.9 (#166), Longcat Flash Chat: 43.5 (#87)
| Benchmark | Devstral Small 2505 | Longcat Flash Chat |
|---|---|---|
| SWE-bench Verified (bash only) | 56.4% | — |
| SciCode | 28.8% | — |
| LMArena Coding | — | 1471 |
Reasoning Too close to call
Devstral Small 2505: 19.7 (#252), Longcat Flash Chat: 19.0 (#272)
| Benchmark | Devstral Small 2505 | Longcat Flash Chat |
|---|---|---|
| Kagi LLM Benchmark | 37.7% | 43.9% |
| NYT Connections (extended) | — | 17.7% |
| CritPt | 0% | — |
| LMArena Hard Prompts | — | 1440 |
Math Not comparable
Devstral Small 2505: —, Longcat Flash Chat: 39.4 (#107)
| Benchmark | Devstral Small 2505 | Longcat Flash Chat |
|---|---|---|
| LMArena Math | — | 1442 |
Knowledge Not comparable
Devstral Small 2505: —, Longcat Flash Chat: 40.6 (#116)
| Benchmark | Devstral Small 2505 | Longcat Flash Chat |
|---|---|---|
| LMArena Expert | — | 1454 |
Multilingual Not comparable
Devstral Small 2505: —, Longcat Flash Chat: 51.9 (#101)
| Benchmark | Devstral Small 2505 | Longcat Flash Chat |
|---|---|---|
| LMArena Non-English | — | 1404 |
| LMArena Chinese | — | 1465 |
| LMArena French | — | 1456 |
| LMArena German | — | 1408 |
| LMArena Japanese | — | 1373 |
| LMArena Korean | — | 1371 |
| LMArena Russian | — | 1395 |
| LMArena Spanish | — | 1445 |
Instruction Following Not comparable
Devstral Small 2505: —, Longcat Flash Chat: 74.4 (#96)
| Benchmark | Devstral Small 2505 | Longcat Flash Chat |
|---|---|---|
| LMArena Instruction Following | — | 1411 |
Long Context Not comparable
Devstral Small 2505: —, Longcat Flash Chat: 43.5 (#93)
| Benchmark | Devstral Small 2505 | Longcat Flash Chat |
|---|---|---|
| LMArena Longer Query | — | 1425 |
Writing & Preference Not comparable
Devstral Small 2505: —, Longcat Flash Chat: 61.0 (#91)
| Benchmark | Devstral Small 2505 | Longcat Flash Chat |
|---|---|---|
| LMArena Text | — | 1427 |
| LMArena Creative Writing | — | 1388 |
| LMArena Multi-Turn | — | 1418 |
Frequently asked questions
Is Devstral Small 2505 better than Longcat Flash Chat?
Longcat Flash Chat is the stronger model overall, scoring 42.1 to 34.3 on the Noometry Index.
Is Devstral Small 2505 or Longcat Flash Chat better for coding?
Longcat Flash Chat scores higher on coding benchmarks: 43.5 versus 38.9 in the Noometry coding category.
How many benchmarks do Devstral Small 2505 and Longcat Flash Chat share?
1 benchmark has published results for both models. Devstral Small 2505 has 4 scored results on Noometry and Longcat Flash Chat has 19.