# Can I run Stable Diffusion 1.5 on iPhone 15 Pro?

Updated: 2026-06-15

**Yes, but tight.** Fits at fp16 (~3.7 GB of ~4.5 GB usable) but with little headroom; close other apps.

- Model: 860M UNET image model, peak ~3.7 GB VRAM at fp16
- Device: 8 GB unified, ~4.5 GB usable
- All components resident (no offload): ~4 GB
- Offload floor (slow): ~2 GB
- Tools: AUTOMATIC1111, ComfyUI, Draw Things, diffusers
- License: CreativeML OpenRAIL-M (commercial use: yes)

Sources: https://huggingface.co/stable-diffusion-v1-5/stable-diffusion-v1-5, https://github.com/AUTOMATIC1111/stable-diffusion-webui/wiki/Optimizations, https://huggingface.co/Comfy-Org/stable-diffusion-v1-5-archive/blob/main/v1-5-pruned-emaonly-fp16.safetensors.

More: https://localmodel.run/can-i-run/stable-diffusion-1-5/iphone-15-pro