Basic ComfyUI workflow for Chroma Diffusion

Necessary extension, put into "ComfyUI\custom_nodes" folder:

https://github.com/lodestone-rock/ComfyUI_FluxMod

Models folder same as for Flux:

"ComfyUI\models\unet"

"ComfyUI\models\clip"

Chroma GGUF models run same as normal ones, use "Load Chroma Diffusion Model" and "Padding Removal" custom nodes with T5 text encoder only.

Checkpoints for GPU's with high VRAM:

https://huggingface.co/lodestones/Chroma/tree/main

Checkpoints for GPU's with medium VRAM:

https://huggingface.co/silveroxides/Chroma-GGUF/tree/main

T5 text encoder (e4m3fn preferred for medium VRAM):

https://civarchive.com/models/497255?modelVersionId=568405

Suggested parameters to use:

I prefer euler ancestral with beta scheduler as it follows prompt better than just euler beta or other combinations as I experimented.

It produces a lot of dots look like trypophobia hell and noise clusters at image edges. So "ModelSamplingFlux" with "max_shift" = 1.5 "base_shift" = 0.5 improves quality pretty much.

Other parameters same as for Flux:

good results at 25 steps with CFG 4.0-5.0, faster at 20 steps