Photorealistic
Juggernaut Z Fast — Photorealistic Images On-Device
Juggernaut Z Fast is RunDiffusion's photorealistic fine-tune of Z-Image. Pick it when you want images that read as photographs — portraits, product shots, natural light. It has the same hardware reach as Z-Image-Turbo: a 12 GB iPhone, an 8 GB iPad, or any Apple Silicon Mac.
What Juggernaut Z Fast Supports
| iPhone | 12 GB |
|---|---|
| iPad | 8 GB |
| Mac | Any Apple Silicon Mac |
| Download size | 6.42 GB (3.99 GB when the shared text encoder is already installed) |
| Steps | 8 (fixed) |
| Negative prompt | Yes |
| Rewrite Prompt (on-device enhancer) | Yes |
| Output sizes | S · M everywhere; L needs 12 GB on iPhone or iPad; XL on 24 GB devices |
| Latent upscaler | Off · 2x · 4x |
| License | Apache License 2.0. Your images are yours, including for commercial use. |