Can LongCat Flash Chat run on OnePlus 15R?
NO — Won't fit
Formula estimate
What this means
None of the versions we checked fit safely on this phone. The checked version needs about 159.6 GB, while we estimate that the model can use about 12 GB.
Try a smaller model, or use this model on a device with more memory.
This result is calculated from the phone and model specifications. It has not been measured on this exact phone and setup.
−147.6GB short
memory that doesn't exist here
159.6GB
needed at IQ1_S
IQ1_S
quant checked
needs 159.6 GBusable 12 GB · short 147.6 GB
Snapdragon 8 Gen 516 GB RAMCPU / GPUAlso sold with 12 GB
Three ways forward
1
Try a smaller quant
No quant of LongCat Flash Chat fits this phone — even the smallest is too big. Options 2 and 3 are your real choices.
3
Run it in the cloud
The full LongCat Flash Chat, no download, at data-center speed — pay per token.
provider recommendations coming later
Where the memory goes
| Component | Detail | GB |
|---|---|---|
| Model weights | IQ1_S GGUF (114 GB) + mmap overhead | 119.7 |
| KV cache | 4K context window | 39.3 |
| Runtime | llama.cpp + app overhead | 0.6 |
| Total needed | at IQ1_S, 4K context | 159.6 |
| Working budget | 16 GB RAM − Android system reserve | 12 |
| Headroom | memory shortfall | −147.6 |
Pick your quant
| Quant | Download | Verdict | Speed |
|---|---|---|---|
| IQ1_S | 114 GB | ✕ Won't fit | won't fit |
Related checks
More on OnePlus 15R
LongCat Flash Chat on other phones