Can Ternary Bonsai 27B run on iPhone 15?
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 8.4 GB, while we estimate that the model can use about 3.9 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.
−4.5GB short
memory that doesn't exist here
8.4GB
needed at Q2_0
Q2_0
quant checked
needs 8.4 GBusable 3.9 GB · short 4.5 GB
Apple A16 Bionic6 GB RAMMetal
Three ways forward
1
Try a smaller quant
No quant of Ternary Bonsai 27B 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 Ternary Bonsai 27B, no download, at data-center speed — pay per token.
provider recommendations coming later
Where the memory goes
| Component | Detail | GB |
|---|---|---|
| Model weights | Q2_0 GGUF (7.2 GB) + mmap overhead | 7.6 |
| KV cache | 4K context window | 0.3 |
| Runtime | llama.cpp + app overhead | 0.6 |
| Total needed | at Q2_0, 4K context | 8.4 |
| Working budget | 6 GB RAM − iOS reserve (jetsam limit) | 3.9 |
| Headroom | memory shortfall | −4.5 |
Pick your quant
| Quant | Download | Verdict | Speed |
|---|---|---|---|
| Q2_0 | 7.2 GB | ✕ Won't fit | won't fit |
| Q2_g64 | 7.6 GB | ✕ Won't fit | won't fit |
Related checks
More on iPhone 15
Ternary Bonsai 27B on other phones