| --- |
| license: apache-2.0 |
| license_link: https://github.com/Tongyi-MAI/Z-Image/blob/main/LICENSE |
| base_model: |
| - Tongyi-MAI/Z-Image-Turbo |
| tags: |
| - vae |
| - text-encoder |
| - diffusion-single-file |
| - comfyui |
| - z-image |
| --- |
| |
| # Z-Image Turbo VAE + Qwen3-4B conditioner, single file (mirror) |
|
|
| The two single-file Z-Image assets that |
| [stable-diffusion.cpp](https://github.com/leejet/stable-diffusion.cpp) needs, mirrored from |
| [Comfy-Org/z_image_turbo](https://huggingface.co/Comfy-Org/z_image_turbo). |
|
|
| Unsloth Studio fetches these on the no-GPU (native sd.cpp) path: both for Z-Image, and the |
| Qwen3-4B conditioner again for FLUX.2 klein 4B, which shares it. They used to come straight from |
| the community repack; a rename or a takedown there turns every CPU Z-Image and klein-4B load into |
| a 404, so they are mirrored here. **The weights are unmodified:** byte for byte the files of the |
| same name in the source repo. |
|
|
| | File | Size | Upstream model | Licence | |
| |---|---|---|---| |
| | `split_files/vae/ae.safetensors` | 0.31 GiB | the FLUX.1 autoencoder, which [Tongyi-MAI/Z-Image-Turbo](https://huggingface.co/Tongyi-MAI/Z-Image-Turbo) reuses | Apache-2.0 | |
| | `split_files/text_encoders/qwen_3_4b.safetensors` | 7.49 GiB | Z-Image's Qwen3-4B conditioner | Apache-2.0 | |
|
|
| Only these two files are mirrored. The source repo also ships the Z-Image diffusion models, a |
| distill LoRA and quantised conditioners; Studio does not use them from there, so they are not here. |
|
|
| ## Licence |
|
|
| Apache-2.0 for both files. The source repack carries no licence metadata at all, so the terms |
| here come from upstream rather than from the repacker. |
|
|
| Worth naming precisely, because the filename hides it: `ae.safetensors` is **the FLUX.1 |
| autoencoder**, not a Tongyi-trained VAE. The file's own safetensors metadata says |
| `modelspec.author = "Black Forest Labs"` and `modelspec.license = "Apache License 2.0"`, and this |
| mirror is byte-identical, so that metadata is still in there. Z-Image reuses it, and Black Forest |
| Labs ships the same autoencoder in the Apache-2.0 `black-forest-labs/FLUX.1-schnell`. The |
| conditioner derives from Apache-2.0 Qwen3-4B. |
|
|
| Full text in [`LICENSE`](https://huggingface.co/unsloth/Z-Image-Turbo-ComfyUI/blob/main/LICENSE), |
| attribution and the statement of what the repack changed in |
| [`NOTICE`](https://huggingface.co/unsloth/Z-Image-Turbo-ComfyUI/blob/main/NOTICE). Not an official |
| Alibaba Group, Black Forest Labs or ComfyUI product, and not endorsed by any of them. |
|
|
