Model comparison
GPT-5 Mini vs Longcat Flash Chat
GPT-5 Mini and Longcat Flash Chat score almost the same on the Noometry Index (41.8 vs 42.1), so choose on price, context window or the category you care about most.
Last verified . 18 shared benchmarks.
Summary
- They share 18 benchmarks with published results for both. GPT-5 Mini scores higher in 4 categories and Longcat Flash Chat in 4 categories; 8 gaps are clear of the uncertainty.
- The widest gap is in math, where GPT-5 Mini leads 46.7 to 39.4.
- The biggest single-benchmark swing is Kagi LLM Benchmark: 70.3% for GPT-5 Mini and 43.9% for Longcat Flash Chat.
- Longcat Flash Chat has downloadable open weights; the other is API-only.
Side by side
| GPT-5 Mini | Longcat Flash Chat | |
|---|---|---|
| Provider | OpenAI | Meituan |
| Noometry Index | 41.8 | 42.1 |
| Released | 2025-08-07 | — |
| Weights | Proprietary | Open |
| Context window | 400K | — |
| Max output | 128K | — |
| Input $ / M tokens | $0.25 | — |
| Output $ / M tokens | $2 | — |
| Results tracked | 60 | 19 |
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Category by category
Coding Longcat Flash Chat leads
GPT-5 Mini: 40.1 (#146), Longcat Flash Chat: 43.5 (#87)
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| LMArena Coding | 1406 | 1471 |
| SWE-bench Verified | 64.7% | — |
| SWE-bench Verified (bash only) | 59.8% | — |
| SWE-bench Multilingual | 39.7% | — |
| SciCode | 39.2% | — |
| WeirdML | 52.7% | — |
| ALE-Bench | 799.77 | — |
| AlgoTune | 1.38 | — |
Agentic & Tool Use Not comparable
GPT-5 Mini: 31.1 (#70), Longcat Flash Chat: —
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| Terminal-Bench | 34.8% | — |
| Berkeley Function Calling Leaderboard | 55.5% | — |
| Vending-Bench 2 | -31.18 | — |
Reasoning GPT-5 Mini leads
GPT-5 Mini: 23.9 (#168), Longcat Flash Chat: 19.0 (#272)
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| Kagi LLM Benchmark | 70.3% | 43.9% |
| LMArena Hard Prompts | 1380 | 1440 |
| ARC-AGI-2 | 4.4% | — |
| NYT Connections (extended) | — | 17.7% |
| ARC-AGI-1 | 54.3% | — |
| CritPt | 0% | — |
| Chess Puzzles | 30% | — |
| EnigmaEval | 8.2% | — |
| Mystery Game Puzzles | 10% | — |
| DTBench | 80.5% | — |
| LMCA | 34.2% | — |
| Epoch Capabilities Index | 145.52 | — |
| ForecastBench | 61 | — |
Math GPT-5 Mini leads
GPT-5 Mini: 46.7 (#69), Longcat Flash Chat: 39.4 (#107)
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| LMArena Math | 1378 | 1442 |
| FrontierMath (Tiers 1-3) | 46.7% | — |
| FrontierMath Tier 4 | 12.2% | — |
| OTIS Mock AIME 2024-2025 | 86.7% | — |
| ProofBench | 9% | — |
| Omni-MATH | 72.2% | — |
| MATH Level 5 | 97.8% | — |
| FrontierMath (Feb 2025 set) | 27.2% | — |
| FrontierMath Tier 4 (v1) | 6.3% | — |
Knowledge GPT-5 Mini leads
GPT-5 Mini: 45.6 (#86), Longcat Flash Chat: 40.6 (#116)
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| LMArena Expert | 1379 | 1454 |
| GPQA Diamond | 75% | — |
| Humanity's Last Exam | 19.4% | — |
| SimpleQA Verified | 21.6% | — |
| MMLU-Pro | 83.5% | — |
| Confabulations | 13.3% | — |
| Vectara Hallucination Rate | 12.9% | — |
| GPQA (HELM) | 75.6% | — |
Multimodal Not comparable
GPT-5 Mini: 35.6 (#85), Longcat Flash Chat: —
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| LMArena Vision | 1202 | — |
| VPCT | 40.2% | — |
Multilingual Longcat Flash Chat leads
GPT-5 Mini: 48.9 (#137), Longcat Flash Chat: 51.9 (#101)
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| LMArena Non-English | 1363 | 1404 |
| LMArena Chinese | 1385 | 1465 |
| LMArena French | 1386 | 1456 |
| LMArena German | 1366 | 1408 |
| LMArena Japanese | 1341 | 1373 |
| LMArena Korean | 1308 | 1371 |
| LMArena Russian | 1362 | 1395 |
| LMArena Spanish | 1355 | 1445 |
Instruction Following GPT-5 Mini leads
GPT-5 Mini: 76.2 (#46), Longcat Flash Chat: 74.4 (#96)
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| LMArena Instruction Following | 1357 | 1411 |
| IFEval | 92.7% | — |
Long Context Longcat Flash Chat leads
GPT-5 Mini: 41.9 (#132), Longcat Flash Chat: 43.5 (#93)
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| LMArena Longer Query | 1355 | 1425 |
| Fiction.LiveBench | 69.4% | — |
Writing & Preference Longcat Flash Chat leads
GPT-5 Mini: 55.2 (#148), Longcat Flash Chat: 61.0 (#91)
| Benchmark | GPT-5 Mini | Longcat Flash Chat |
|---|---|---|
| LMArena Text | 1373 | 1427 |
| LMArena Creative Writing | 1325 | 1388 |
| LMArena Multi-Turn | 1363 | 1418 |
| Short-Story Creative Writing | 83.1% | — |
| EQ-Bench Creative Writing | 1313 | — |
| WildBench | 85.5% | — |
Frequently asked questions
Is GPT-5 Mini better than Longcat Flash Chat?
GPT-5 Mini and Longcat Flash Chat score almost the same on the Noometry Index (41.8 vs 42.1), so choose on price, context window or the category you care about most.
Is GPT-5 Mini or Longcat Flash Chat better for coding?
Longcat Flash Chat scores higher on coding benchmarks: 43.5 versus 40.1 in the Noometry coding category.
How many benchmarks do GPT-5 Mini and Longcat Flash Chat share?
18 benchmarks have published results for both models. GPT-5 Mini has 60 scored results on Noometry and Longcat Flash Chat has 19.