Model comparison
Grok Build 0.1 vs Longcat Flash Chat
Longcat Flash Chat is the stronger model overall, scoring 41.5 to 35.8 on the Noometry Index.
Last verified . 0 shared benchmarks.
Summary
- The widest gap is in reasoning, where Grok Build 0.1 leads 31.3 to 18.3.
- Longcat Flash Chat has downloadable open weights; the other is API-only.
Side by side
| Grok Build 0.1 | Longcat Flash Chat | |
|---|---|---|
| Provider | xAI | Meituan |
| Noometry Index | 35.8 | 41.5 |
| Released | 2026-04-16 | — |
| Weights | Proprietary | Open |
| Context window | 256K | — |
| Max output | 256K | — |
| Input $ / M tokens | $1 | — |
| Output $ / M tokens | $2 | — |
| Results tracked | 3 | 19 |
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Category by category
Coding Too close to call
Grok Build 0.1: 42.5 (#90), Longcat Flash Chat: 42.9 (#85)
| Benchmark | Grok Build 0.1 | Longcat Flash Chat |
|---|---|---|
| SciCode | 50.2% | — |
| LMArena Coding | — | 1471 |
Agentic & Tool Use Not comparable
Grok Build 0.1: 22.5 (#122), Longcat Flash Chat: —
| Benchmark | Grok Build 0.1 | Longcat Flash Chat |
|---|---|---|
| GBAEval | 2.4% | — |
Reasoning Grok Build 0.1 leads
Grok Build 0.1: 31.3 (#73), Longcat Flash Chat: 18.3 (#267)
| Benchmark | Grok Build 0.1 | Longcat Flash Chat |
|---|---|---|
| Kagi LLM Benchmark | — | 43.9% |
| NYT Connections (extended) | — | 17.7% |
| CritPt | 9.1% | — |
| LMArena Hard Prompts | — | 1440 |
Math Not comparable
Grok Build 0.1: —, Longcat Flash Chat: 36.6 (#107)
| Benchmark | Grok Build 0.1 | Longcat Flash Chat |
|---|---|---|
| LMArena Math | — | 1441 |
Knowledge Not comparable
Grok Build 0.1: —, Longcat Flash Chat: 40.0 (#111)
| Benchmark | Grok Build 0.1 | Longcat Flash Chat |
|---|---|---|
| LMArena Expert | — | 1454 |
Multilingual Not comparable
Grok Build 0.1: —, Longcat Flash Chat: 52.1 (#95)
| Benchmark | Grok Build 0.1 | Longcat Flash Chat |
|---|---|---|
| LMArena Non-English | — | 1404 |
| LMArena Chinese | — | 1465 |
| LMArena French | — | 1457 |
| LMArena German | — | 1409 |
| LMArena Japanese | — | 1373 |
| LMArena Korean | — | 1372 |
| LMArena Russian | — | 1396 |
| LMArena Spanish | — | 1445 |
Instruction Following Not comparable
Grok Build 0.1: —, Longcat Flash Chat: 74.6 (#92)
| Benchmark | Grok Build 0.1 | Longcat Flash Chat |
|---|---|---|
| LMArena Instruction Following | — | 1411 |
Long Context Not comparable
Grok Build 0.1: —, Longcat Flash Chat: 43.5 (#89)
| Benchmark | Grok Build 0.1 | Longcat Flash Chat |
|---|---|---|
| LMArena Longer Query | — | 1425 |
Writing & Preference Not comparable
Grok Build 0.1: —, Longcat Flash Chat: 61.2 (#88)
| Benchmark | Grok Build 0.1 | Longcat Flash Chat |
|---|---|---|
| LMArena Text | — | 1427 |
| LMArena Creative Writing | — | 1388 |
| LMArena Multi-Turn | — | 1418 |
Frequently asked questions
Is Grok Build 0.1 better than Longcat Flash Chat?
Longcat Flash Chat is the stronger model overall, scoring 41.5 to 35.8 on the Noometry Index.
Is Grok Build 0.1 or Longcat Flash Chat better for coding?
They score almost the same on coding (42.5 vs 42.9); test both on your own repository before choosing.
How many benchmarks do Grok Build 0.1 and Longcat Flash Chat share?
0 benchmarks have published results for both models. Grok Build 0.1 has 3 scored results on Noometry and Longcat Flash Chat has 19.