Model comparison
Kimi K2 Thinking Turbo vs Longcat Flash Chat
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 42.1 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Kimi K2 Thinking Turbo scores higher in 3 categories and Longcat Flash Chat in 5 categories; 5 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where Kimi K2 Thinking Turbo leads 32.5 to 19.0.
Side by side
| Kimi K2 Thinking Turbo | Longcat Flash Chat | |
|---|---|---|
| Provider | Moonshot AI | Meituan |
| Noometry Index | 45.8 | 42.1 |
| Released | 2025-11-06 | — |
| Weights | Open | Open |
| Context window | — | — |
| Max output | — | — |
| Input $ / M tokens | — | — |
| Output $ / M tokens | — | — |
| Results tracked | 21 | 19 |
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Category by category
Coding Longcat Flash Chat leads
Kimi K2 Thinking Turbo: 38.4 (#178), Longcat Flash Chat: 43.5 (#87)
| Benchmark | Kimi K2 Thinking Turbo | Longcat Flash Chat |
|---|---|---|
| LMArena Coding | 1454 | 1471 |
| LMArena WebDev | 1322 | — |
Reasoning Kimi K2 Thinking Turbo leads
Kimi K2 Thinking Turbo: 32.5 (#75), Longcat Flash Chat: 19.0 (#272)
| Benchmark | Kimi K2 Thinking Turbo | Longcat Flash Chat |
|---|---|---|
| LMArena Hard Prompts | 1428 | 1440 |
| Kagi LLM Benchmark | — | 43.9% |
| NYT Connections (extended) | — | 17.7% |
| Chess Puzzles | 20% | — |
Math Kimi K2 Thinking Turbo leads
Kimi K2 Thinking Turbo: 47.4 (#68), Longcat Flash Chat: 39.4 (#107)
| Benchmark | Kimi K2 Thinking Turbo | Longcat Flash Chat |
|---|---|---|
| LMArena Math | 1429 | 1442 |
| OTIS Mock AIME 2024-2025 | 83.1% | — |
Knowledge Kimi K2 Thinking Turbo leads
Kimi K2 Thinking Turbo: 50.9 (#69), Longcat Flash Chat: 40.6 (#116)
| Benchmark | Kimi K2 Thinking Turbo | Longcat Flash Chat |
|---|---|---|
| LMArena Expert | 1439 | 1454 |
| GPQA Diamond | 84.2% | — |
Multilingual Too close to call
Kimi K2 Thinking Turbo: 51.4 (#109), Longcat Flash Chat: 51.9 (#101)
| Benchmark | Kimi K2 Thinking Turbo | Longcat Flash Chat |
|---|---|---|
| LMArena Non-English | 1398 | 1404 |
| LMArena Chinese | 1456 | 1465 |
| LMArena French | 1425 | 1456 |
| LMArena German | 1390 | 1408 |
| LMArena Japanese | 1357 | 1373 |
| LMArena Korean | 1330 | 1371 |
| LMArena Russian | 1391 | 1395 |
| LMArena Spanish | 1406 | 1445 |
Instruction Following Too close to call
Kimi K2 Thinking Turbo: 74.0 (#109), Longcat Flash Chat: 74.4 (#96)
| Benchmark | Kimi K2 Thinking Turbo | Longcat Flash Chat |
|---|---|---|
| LMArena Instruction Following | 1403 | 1411 |
Long Context Too close to call
Kimi K2 Thinking Turbo: 43.2 (#102), Longcat Flash Chat: 43.5 (#93)
| Benchmark | Kimi K2 Thinking Turbo | Longcat Flash Chat |
|---|---|---|
| LMArena Longer Query | 1415 | 1425 |
Writing & Preference Longcat Flash Chat leads
Kimi K2 Thinking Turbo: 60.0 (#104), Longcat Flash Chat: 61.0 (#91)
| Benchmark | Kimi K2 Thinking Turbo | Longcat Flash Chat |
|---|---|---|
| LMArena Text | 1415 | 1427 |
| LMArena Creative Writing | 1374 | 1388 |
| LMArena Multi-Turn | 1414 | 1418 |
Frequently asked questions
Is Kimi K2 Thinking Turbo better than Longcat Flash Chat?
Kimi K2 Thinking Turbo is the stronger model overall, scoring 45.8 to 42.1 on the Noometry Index.
Is Kimi K2 Thinking Turbo or Longcat Flash Chat better for coding?
Longcat Flash Chat scores higher on coding benchmarks: 43.5 versus 38.4 in the Noometry coding category.
How many benchmarks do Kimi K2 Thinking Turbo and Longcat Flash Chat share?
17 benchmarks have published results for both models. Kimi K2 Thinking Turbo has 21 scored results on Noometry and Longcat Flash Chat has 19.