Model comparison
GPT-5.2 Pro vs Longcat Flash Chat
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 42.1 on the Noometry Index.
Last verified . 1 shared benchmarks.
Summary
- They share 1 benchmark with published results for both. GPT-5.2 Pro scores higher in 2 categories and Longcat Flash Chat in 0 categories; 2 gaps are clear of the uncertainty.
- The widest gap is in reasoning, where GPT-5.2 Pro leads 51.5 to 19.0.
- The biggest single-benchmark swing is NYT Connections (extended): 79.3% for GPT-5.2 Pro and 17.7% for Longcat Flash Chat.
- Longcat Flash Chat has downloadable open weights; the other is API-only.
Side by side
| GPT-5.2 Pro | Longcat Flash Chat | |
|---|---|---|
| Provider | OpenAI | Meituan |
| Noometry Index | 52.3 | 42.1 |
| Released | 2025-12-11 | — |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $21 | — |
| Output $ / M tokens | $168 | — |
| Results tracked | 8 | 19 |
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Category by category
Coding Not comparable
GPT-5.2 Pro: —, Longcat Flash Chat: 43.5 (#87)
| Benchmark | GPT-5.2 Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Coding | — | 1471 |
Reasoning GPT-5.2 Pro leads
GPT-5.2 Pro: 51.5 (#33), Longcat Flash Chat: 19.0 (#272)
| Benchmark | GPT-5.2 Pro | Longcat Flash Chat |
|---|---|---|
| NYT Connections (extended) | 79.3% | 17.7% |
| ARC-AGI-2 | 54.2% | — |
| SimpleBench | 57.4% | — |
| Kagi LLM Benchmark | — | 43.9% |
| ARC-AGI-1 | 90.5% | — |
| LMArena Hard Prompts | — | 1440 |
| Epoch Capabilities Index | 155.4 | — |
Math GPT-5.2 Pro leads
GPT-5.2 Pro: 65.3 (#29), Longcat Flash Chat: 39.4 (#107)
| Benchmark | GPT-5.2 Pro | Longcat Flash Chat |
|---|---|---|
| FrontierMath (Tiers 1-3) | 74% | — |
| FrontierMath Tier 4 | 46% | — |
| LMArena Math | — | 1442 |
| FrontierMath Tier 4 (v1) | 31.3% | — |
Knowledge Not comparable
GPT-5.2 Pro: —, Longcat Flash Chat: 40.6 (#116)
| Benchmark | GPT-5.2 Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Expert | — | 1454 |
Multilingual Not comparable
GPT-5.2 Pro: —, Longcat Flash Chat: 51.9 (#101)
| Benchmark | GPT-5.2 Pro | 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
GPT-5.2 Pro: —, Longcat Flash Chat: 74.4 (#96)
| Benchmark | GPT-5.2 Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Instruction Following | — | 1411 |
Long Context Not comparable
GPT-5.2 Pro: —, Longcat Flash Chat: 43.5 (#93)
| Benchmark | GPT-5.2 Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Longer Query | — | 1425 |
Writing & Preference Not comparable
GPT-5.2 Pro: —, Longcat Flash Chat: 61.0 (#91)
| Benchmark | GPT-5.2 Pro | Longcat Flash Chat |
|---|---|---|
| LMArena Text | — | 1427 |
| LMArena Creative Writing | — | 1388 |
| LMArena Multi-Turn | — | 1418 |
Frequently asked questions
Is GPT-5.2 Pro better than Longcat Flash Chat?
GPT-5.2 Pro is the stronger model overall, scoring 52.3 to 42.1 on the Noometry Index.
How many benchmarks do GPT-5.2 Pro and Longcat Flash Chat share?
1 benchmark has published results for both models. GPT-5.2 Pro has 8 scored results on Noometry and Longcat Flash Chat has 19.