Flux Schnell and Dev Workflow with Upscaling

Flux has been out of under a week and already seeing some great innovation in the open source community. I was working on exploring and putting together my guide on running Flux on Runpod ($0.34 per hour) and discovered this workflow by @plasm0 that runs locally and support upscaling as well.

So I ran up my local instance on my computer of ComfyUI with Flux and started to see some incredible results.

Workflow is available here, you can download.

What you will need to run

In order to run this, you need ComfyUI (update to the latest version) and then download these files.

• Model: Flux1-Schnell or Flux1-Dev (you need to agree to the terms). Files are 23.8GB each
• VAE: AE (its own VAE). File is 335Mb
• Clip1: T5xxl_fp8_e4m3fn (for under 32GB VRAM) or T5xxl_fp16 (32GB or above VRAM)
• Clip2: Clip_l

Place the Model in the models\unet folder, VAE in models\VAE and Clip in models\clip folder of ComfyUI directories. Make sure you restart ComfyUI and Refresh your browser.

The workflow utilises Flux Schnell to generate the initial image and then Flux Dev to generate the higher detailed image. Final upscale is done using an upscale model.

I made a couple of changes to improve it for me but I don’t think they are major so you can explore and edit as you like.

The results and image quality are absolutely stunning!!