Add five useful FLUX workflows

2026-08-08 20:44:12 +00:00
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+# Flow Upscaler
+
+## Summary
+
+Fast latent upscaler for the `FLUX.2` family. It takes existing FLUX latents and upscales them in latent space, so you can push images much larger without relying only on classic pixel upscalers.
+
+## Model Family
+
+- `flux`
+
+## Status
+
+- `imported-only`
+
+## Source
+
+- Original page: <https://github.com/tensorforger/comfyui-flow-upscaler>
+- Workflow file: <https://raw.githubusercontent.com/tensorforger/comfyui-flow-upscaler/main/workflow.json>
+- Original author: `TensorForger`
+- Date imported: `2026-08-08`
+
+## Developer notes
+
+- The author positions this as a fast latent upscaler trained in `Flux.2` latent space.
+- The model is trained for `2x` upscaling, but multiple passes can be chained for much larger outputs.
+- The README recommends the tiny `Flux.2` VAE (`taef2`) for `2048x2048` and above because the original VAE becomes impractical at high resolutions.
+- The workflow included in the repo is the demo path the author expects people to load first.
+
+## Our notes
+
+- This is one of the most practically useful imports here because it solves a real workflow problem instead of just offering another generation variant.
+- It looks especially relevant if you end up using `FLUX.2-klein` or other lighter FLUX-family generation paths and want cleaner high-res finishing.
+- It is more specialized than a generic Ultimate SD Upscale graph, which is a good thing if you want something clearly tied to the FLUX latent stack.
+
+## Required custom nodes
+
+- `comfyui-flow-upscaler`
+- `rgthree-comfy` for `Image Comparer`
+
+## Built-in / core nodes used
+
+- `Flux2Scheduler`
+- `EmptyFlux2LatentImage`
+- standard CLIP / UNET / VAE loaders
+- sampler selection and advanced sampler nodes
+
+## Notes
+
+- Model weights are separate from this workflow and need to be downloaded from the source repo's linked Hugging Face page.
+- Best use: upscale a good FLUX-family image after the composition is already right.