comfyui-workflows/models/flux/flux-union-controlnet

Flux Union ControlNet

Summary

Control-guided FLUX workflow using Union ControlNet, aimed at steering generation from structural inputs rather than relying only on prompting.

Model Family

• flux

Status

• imported-only

Source

• Original repo page: https://huggingface.co/StableDiffusionVN/Flux
• Workflow file: https://huggingface.co/StableDiffusionVN/Flux/resolve/main/ComfyUI_workflow/Flux_Union_Controlnet.json
• Original publisher: StableDiffusionVN
• Date imported: 2026-08-08

Developer notes

• The publisher lists this as one of the included FLUX example workflows in the same repo as their other ComfyUI examples.
• Their README specifically points to ComfyUI-eesahesNodes for InstantX / Union ControlNet support.
• The workflow uses an AIO_Preprocessor, so the source expects an installed preprocessor stack as well, not just the loader node.

Our notes

• This is one of the more practically valuable FLUX workflows because structural control tends to matter more than raw prompting once you actually want repeatability.
• Good candidate if you care about pose, edges, or scene layout staying closer to plan.
• In practice this is the workflow I would keep around when "make it obey the source shape" matters more than style exploration.

Required custom nodes

• ComfyUI-eesahesNodes for InstantX Flux Union ControlNet Loader
• a ControlNet preprocessor pack that provides AIO_Preprocessor, commonly comfyui_controlnet_aux

Built-in / core nodes used

• CheckpointLoaderSimple
• ControlNetApplySD3
• CLIPTextEncode
• KSampler
• LoadImage
• VAEDecode

Notes

• Best use: structure-aware FLUX generation, especially when you have edge/depth/pose style guidance.
• This is more useful than plain text-to-image because it pushes FLUX into controlled generation rather than prompt-only luck.