Can LongCat Flash Chat run on iPhone 16?
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 5.2 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.
−154.4GB short
memory that doesn't exist here
159.6GB
needed at IQ1_S
IQ1_S
quant checked
needs 159.6 GBusable 5.2 GB · short 154.4 GB
Apple A188 GB RAMMetal
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 | 8 GB RAM − iOS reserve (jetsam limit) | 5.2 |
| Headroom | memory shortfall | −154.4 |
Pick your quant
| Quant | Download | Verdict | Speed |
|---|---|---|---|
| IQ1_S | 114 GB | ✕ Won't fit | won't fit |
Related checks
More on iPhone 16
LongCat Flash Chat on other phones