Model decision surface
Compare AI models
Start with LongCat Flash Chat and GPT-5.4 Nano, or choose any two current ranked language models. Compare capability evidence, price, context, provider availability, and weight access without pretending one field decides every use case.
Current public data
LongCat Flash Chat vs GPT-5.4 Nano
Live dataset updated 9/19/2026, 11:04:59 PM UTC
Open 1200×630 evidence receipt| Field | LongCat Flash Chat Meituan Longcat | GPT-5.4 Nano OpenAI |
|---|---|---|
| ModelCap position | #77 | #80 |
| Index score | 54.8 | 52.6 |
| Evidence | Estimatedglobal-corpus-prior over 195 held-out anchors (9%); launch card against 4 resolved peers on 12 rows (91%); exceeds every named peer on 2 of 12 rows; optimism haircut 0 from cross-lab-probe; shrunk 0.2 toward the measured corpus | Measured4 public benchmark observations across 4 boards |
| Input / 1M | Unavailable | $0.20 |
| Output / 1M | Unavailable | $1.25 |
| Pricing status | unavailable | fresh |
| Context | — | 400K |
| Providers | 0 | 2 |
| Weight access | Open weights | API only |
Decision facts
- LongCat Flash Chat is #77; GPT-5.4 Nano is #80 on the same current language board.
- Index scores are 54.8 for LongCat Flash Chat and 52.6 for GPT-5.4 Nano. Their published uncertainty intervals overlap, so the rank difference alone does not establish a reliable capability advantage for your workload.
- Evidence differs: LongCat Flash Chat is Estimated; GPT-5.4 Nano is Measured.
- Weight access differs: LongCat Flash Chat is open; GPT-5.4 Nano is none.
- ModelCap currently lists 0 providers for LongCat Flash Chat and 2 for GPT-5.4 Nano.
These are separate published fields, not a synthetic winner. ModelCap does not collapse price, access, context, and capability evidence into a hidden recommendation score.
Popular comparisons
- Claude Fable 5.1 vs Claude Opus 5#1 vs #2 on the ModelCap Index
- Claude Fable 5.1 vs GPT-6 Astra#1 vs #3 on the ModelCap Index
- Claude Opus 5 vs GPT-6 Astra#2 vs #3 on the ModelCap Index
- Claude Fable 5.1 vs Muse Spark 1.3#1 vs #4 on the ModelCap Index
- Claude Opus 5 vs Muse Spark 1.3#2 vs #4 on the ModelCap Index
- Muse Spark 1.3 vs GPT-6 Astra#4 vs #3 on the ModelCap Index
- Claude Fable 5.1 vs Qwen3.8 Max (0902)#1 vs #5 on the ModelCap Index
- Claude Opus 5 vs Qwen3.8 Max (0902)#2 vs #5 on the ModelCap Index
- GPT-6 Astra vs Qwen3.8 Max (0902)#3 vs #5 on the ModelCap Index
- Muse Spark 1.3 vs Qwen3.8 Max (0902)#4 vs #5 on the ModelCap Index
- Claude Fable 5.1 vs GPT-5.6 Sol#1 vs #6 on the ModelCap Index
- Claude Opus 5 vs GPT-5.6 Sol#2 vs #6 on the ModelCap Index
- GPT-5.6 Sol vs GPT-6 Astra#6 vs #3 on the ModelCap Index
- Muse Spark 1.3 vs GPT-5.6 Sol#4 vs #6 on the ModelCap Index
- GPT-5.6 Sol vs Qwen3.8 Max (0902)#6 vs #5 on the ModelCap Index
- Claude Fable 5.1 vs Gemini 3.8 Flash#1 vs #7 on the ModelCap Index
- Claude Opus 5 vs Gemini 3.8 Flash#2 vs #7 on the ModelCap Index
- Gemini 3.8 Flash vs GPT-6 Astra#7 vs #3 on the ModelCap Index
- Gemini 3.8 Flash vs Muse Spark 1.3#7 vs #4 on the ModelCap Index
- Gemini 3.8 Flash vs Qwen3.8 Max (0902)#7 vs #5 on the ModelCap Index
- Gemini 3.8 Flash vs GPT-5.6 Sol#7 vs #6 on the ModelCap Index
- Claude Fable 5.1 vs Kimi K3#1 vs #8 on the ModelCap Index
- Claude Opus 5 vs Kimi K3#2 vs #8 on the ModelCap Index
- Kimi K3 vs GPT-6 Astra#8 vs #3 on the ModelCap Index
Each comparison page is a permanent, shareable URL with the same live figures as this tool: ModelCap Index position, API pricing, context window, provider count, weight access and every shared benchmark board.