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license: apache-2.0
tags:
- comfyui
- flux2
- ghoststack
- birefnet
---
# FLUX2-KLEIN-4B-BIREFNET-RUNTIME
Public deployment bundle for the GhostStack WF-02 isolation runtime. This
repository contains unchanged upstream model component files. GhostStack did
not train, merge, convert, quantize, fine-tune, or otherwise modify these
weights and does not claim ownership of them. Each component retains its
upstream license; see `LICENSE` and `NOTICE`.
## Components
| Role | Relative path | Upstream repository | Frozen upstream revision | SHA-256 | Bytes | License |
|---|---|---|---|---|---:|---|
| Diffusion model | `diffusion_models/flux-2-klein-4b-fp8.safetensors` | [black-forest-labs/FLUX.2-klein-4b-fp8](https://huggingface.co/black-forest-labs/FLUX.2-klein-4b-fp8) | `c30fa39e0d916333415ae96c66169d8cfdca3e63` | `97ed34fe0567e436200f2faee3939b88f2b5d99f8af2a4dc16532c4245c0ccb6` | 4070624520 | Apache-2.0 |
| Text encoder | `text_encoders/qwen_3_4b.safetensors` | [Comfy-Org/vae-text-encorder-for-flux-klein-4b](https://huggingface.co/Comfy-Org/vae-text-encorder-for-flux-klein-4b) | `8556e4d870cda7c53c7942b190bfeea5be9bd411` | `6c671498573ac2f7a5501502ccce8d2b08ea6ca2f661c458e708f36b36edfc5a` | 8044982048 | Apache-2.0 |
| VAE | `vae/flux2-vae.safetensors` | [Comfy-Org/vae-text-encorder-for-flux-klein-4b](https://huggingface.co/Comfy-Org/vae-text-encorder-for-flux-klein-4b) | `a9e4ca87c16db4c4e1a16406a9ddb300ab0ae246` | `868fe7b343ccf8f3a19dbcfcafbc3d5f888802be3f89bd81b65b3621a066ce8f3` | 336211292 | Apache-2.0 |
| Background removal | `background_removal/birefnet.safetensors` | [Comfy-Org/BiRefNet](https://huggingface.co/Comfy-Org/BiRefNet) | `5a1bd8ae750548f8cd42e3c8afa854fd3eba0fb1` | `9ab37426bf4de0567af6b5d21b16151357149139362e6e8992021b8ce356a154` | 444473596 | MIT |
The repository layout preserves the canonical ComfyUI model folders. The
bundle contains exactly these four model files and no other model weights.
## License and attribution
The three FLUX.2 Klein runtime components are supplied under Apache-2.0. The
BiRefNet component is supplied under MIT. The complete Apache-2.0 text is in
`LICENSE`; the complete MIT text and third-party attribution are in `NOTICE`.
Retain both files and the notices when redistributing this bundle. Consult the
linked upstream model pages for their model cards and additional terms.
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