This uses the newest model Omnigen released just a few days ago: https://github.com/VectorSpaceLab/OmniGen

Be sure to update your nodes since the last version, since the nodes have been completely overhauled through my commits.

You can now change the model, use FP8 models, and more!

How to Install:

The model files are no longer automatically downloaded, since you can use any model you want now that is compatible, including FP8 models.

1. Create an OmniGen folder the models directory in /ComfyUI/models/Omnigen (this has moved from the older folder location)

2. If you've already downloaded it before and want to use BF16, move the model folder from \ComfyUI\models\AIFSH\Shitao\OmniGen-v1 to \ComfyUI\models\OmniGen\OmniGen-v1

3. If you don't have the model files yet and want to use BF16, within the \ComfyUI\models\OmniGen download all of the files from https://huggingface.co/Shitao/OmniGen-v1 into its own folder.

   You can also download the models with GIT.

   First do git LFS and afterwards do git clone https://huggingface.co/Shitao/OmniGen-v1.

4. Or optionally download the FP8 version using the same method as above, but instead for that repo: https://huggingface.co/silveroxides/OmniGen-V1-fp8_e4m3fn
   First do git LFS and afterwards do git clone https://huggingface.co/silveroxides/OmniGen-V1-fp8_e4m3fn .

   This can take awhile, and may appear as if it is doing nothing for a bit.

5. Import workflow and install missing nodes with Comfy Manager!

Check out this video to see everything that is possible (while ignoring the installation instructions):

It uses a lot of nodes to automate as much as possible. All of them are available via Comfy Manager however.

Enjoy!