Model comparison
Amazon Nova Pro vs Longcat Flash Chat
Longcat Flash Chat is the stronger model overall, scoring 41.5 to 30.5 on the Noometry Index.
Last verified . 17 shared benchmarks.
Summary
- They share 17 benchmarks with published results for both. Amazon Nova Pro scores higher in 1 category and Longcat Flash Chat in 7 categories; 7 gaps are clear of the uncertainty.
- The widest gap is in writing & preference, where Longcat Flash Chat leads 61.2 to 44.1.
- Longcat Flash Chat has downloadable open weights; the other is API-only.
Side by side
| Amazon Nova Pro | Longcat Flash Chat | |
|---|---|---|
| Provider | Amazon | Meituan |
| Noometry Index | 30.5 | 41.5 |
| Released | 2024-12-03 | — |
| Weights | Proprietary | Open |
| Context window | 300K | — |
| Max output | 10K | — |
| Input $ / M tokens | $0.80 | — |
| Output $ / M tokens | $3.20 | — |
| Results tracked | 38 | 19 |
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Category by category
Coding Longcat Flash Chat leads
Amazon Nova Pro: 34.6 (#224), Longcat Flash Chat: 42.9 (#85)
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Coding | 1270 | 1471 |
| LiveBench Coding | 38.1% | — |
Agentic & Tool Use Not comparable
Amazon Nova Pro: 16.6 (#139), Longcat Flash Chat: —
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| Berkeley Function Calling Leaderboard | 25% | — |
| TheAgentCompany | 1.7% | — |
Reasoning Too close to call
Amazon Nova Pro: 19.2 (#240), Longcat Flash Chat: 18.3 (#267)
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Hard Prompts | 1246 | 1440 |
| Kagi LLM Benchmark | — | 43.9% |
| NYT Connections (extended) | — | 17.7% |
| LiveBench Reasoning | 32.6% | — |
| LiveBench Data Analysis | 48.3% | — |
| Epoch Capabilities Index | 123.75 | — |
| LiveBench | 43.5% | — |
Math Longcat Flash Chat leads
Amazon Nova Pro: 26.4 (#240), Longcat Flash Chat: 36.6 (#107)
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Math | 1252 | 1441 |
| Omni-MATH | 24.2% | — |
| LiveBench Math | 38% | — |
Knowledge Longcat Flash Chat leads
Amazon Nova Pro: 27.1 (#246), Longcat Flash Chat: 40.0 (#111)
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Expert | 1211 | 1454 |
| Humanity's Last Exam | 4.4% | — |
| MMLU-Pro | 67.3% | — |
| Confabulations | 30.1% | — |
| Vectara Hallucination Rate | 5.1% | — |
| GPQA (HELM) | 44.6% | — |
| MMLU | 82% | — |
Multimodal Not comparable
Amazon Nova Pro: 24.5 (#121), Longcat Flash Chat: —
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Vision | 980 | — |
Multilingual Longcat Flash Chat leads
Amazon Nova Pro: 39.9 (#218), Longcat Flash Chat: 52.1 (#95)
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Non-English | 1234 | 1404 |
| LMArena Chinese | 1244 | 1465 |
| LMArena French | 1270 | 1457 |
| LMArena German | 1243 | 1409 |
| LMArena Japanese | 1200 | 1373 |
| LMArena Korean | 1203 | 1372 |
| LMArena Russian | 1240 | 1396 |
| LMArena Spanish | 1182 | 1445 |
Instruction Following Longcat Flash Chat leads
Amazon Nova Pro: 65.1 (#221), Longcat Flash Chat: 74.6 (#92)
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Instruction Following | 1235 | 1411 |
| LiveBench Instruction Following | 67.1% | — |
| IFEval | 81.5% | — |
Long Context Longcat Flash Chat leads
Amazon Nova Pro: 38.1 (#199), Longcat Flash Chat: 43.5 (#89)
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Longer Query | 1255 | 1425 |
Writing & Preference Longcat Flash Chat leads
Amazon Nova Pro: 44.1 (#221), Longcat Flash Chat: 61.2 (#88)
| Benchmark | Amazon Nova Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Text | 1259 | 1427 |
| LMArena Creative Writing | 1212 | 1388 |
| LMArena Multi-Turn | 1245 | 1418 |
| Short-Story Creative Writing | 60.5% | — |
| WildBench | 77.7% | — |
| LiveBench Language | 37% | — |
Frequently asked questions
Is Amazon Nova Pro better than Longcat Flash Chat?
Longcat Flash Chat is the stronger model overall, scoring 41.5 to 30.5 on the Noometry Index.
Is Amazon Nova Pro or Longcat Flash Chat better for coding?
Longcat Flash Chat scores higher on coding benchmarks: 42.9 versus 34.6 in the Noometry coding category.
How many benchmarks do Amazon Nova Pro and Longcat Flash Chat share?
17 benchmarks have published results for both models. Amazon Nova Pro has 38 scored results on Noometry and Longcat Flash Chat has 19.