Hi, native controlnet models has been released by Black Forest Labs. These are different from Stable Diffusion based controlnet approach. Instead of Flux Dev checkpoint, you need Flux Dev Depth checkpoint.

I used Depth Anything v2 for depth estimation model, but you can use any of them.

Steps:

1- Update your Comfy UI to latest

2- Download the "flux1-depth-dev.safetensors", into your models/diffusion_models folder:  https://huggingface.co/black-forest-labs/FLUX.1-Depth-dev/blob/main/flux1-depth-dev.safetensors

3- If you want to use Depth Anything v2 for depth estimation like in my workflow, download the depth model and put it under models/controlnet folder:  https://huggingface.co/depth-anything/Depth-Anything-V2-Large/resolve/main/depth_anything_v2_vitl.pth?download=true

and this is the custom node for Depth Anything v2:  https://github.com/kijai/ComfyUI-DepthAnythingV2

Thanks for BlackForestLabs, Kijai and DepthAnything teams.

Note: The model is under Flux Dev License and there is no Flux Schnell support yet.