Flux 2 Klein 9B Upscale + Adonis Refiner LoRA
Upscale images while keeping the original composition and adding refined detail, using Flux 2 Klein 9B with the Adonis Refiner LoRAs. The GGUF build lowers VRAM use for smaller cards.
✓ 100% free — download the workflow and run it locally.Preview
Requirements
- OS: Windows
- GPU: NVIDIA 6GB+ VRAM (8GB recommended)
- Software: ComfyUI
Model downloads
- flux-2-klein-9b Q5_K_M GGUF (UNet) https://huggingface.co/unsloth/FLUX.2-klein-9B-GGUF/tree/main
- Qwen3-8B UD Q5_K_XL GGUF (CLIP) https://huggingface.co/unsloth/Qwen3-8B-GGUF/tree/main
- flux2_vae.safetensors (VAE) https://huggingface.co/black-forest-labs/FLUX.2-klein-4B/tree/main/vae
- adonis_base.safetensors (LoRA) https://huggingface.co/n8te0/adonis_flux2klein/tree/main
- adonis_refine.safetensors (LoRA) https://huggingface.co/n8te0/adonis_flux2klein/tree/main
Custom nodes
- ComfyUI Manager https://github.com/ltdrdata/ComfyUI-Manager
Setup steps
- Import the workflow JSON below into ComfyUI.
- Load the Flux 2 Klein 9B GGUF checkpoints into their loader nodes.
- Upload the image you want to upscale.
- Run the workflow.
Notes & tips
- Use "Install missing custom nodes" in ComfyUI Manager if a node fails.
- Prefer one-click? A ready-made Flux 2 Klein installer is available.
More resources
- Reddit discussion https://www.reddit.com/r/StableDiffusion/comments/1sxeird/adonis_general_consistencyupscale_edit_model_for/
- Original Adonis models (n8te0) https://huggingface.co/n8te0/adonis_flux2klein/tree/main
Want the 1-click version?
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