Version 4.0Welcome to version 4 of my workflow, now with an even further improved base output and a different upscaling method for the refiner. I also want to give a shoutout to <a rel="ugc" href="https://civarchive.com/models/435669?m">Bunline v0.5</a> and its creator yayaman for his great work finetuning PixArt!Version 3.0I managed to get a lot better outputs from the base PixArt Model with some changes and therefore you do not need to do as much refining anymore. Sometimes the unrefined output even seems better. I think this is a huge step up from the previous versions and I would love to hear some Feedback from you! I also wanted to thank you for all the downloads and ratings so far <a target="_blank" rel="ugc" href="https://emojipedia.org/red-heart">❤️</a>Version 2.0Updated the workflow with an optional unsampling and refining step as well as an optional upscaling step. I have also changed some default settings for the samplers.Version 1.0The first release of my ComfyUI workflow for PixArt with a SDXL Refiner. Custom nodes can be found with ComfyUI Manager. Read the description of each node on how to use it if you run into issues! I made this for PixArt Sigma, but the Alpha Version should work as well I think.Follow the install instructions on <a target="_blank" rel="ugc" href="https://github.com/city96/ComfyUI_ExtraModels">https://github.com/city96/ComfyUI_ExtraModels</a> carefully to get a proper install of PixArt and T5!

Boto's PixArt Sigma with optional SDXL Refiner

<ul><li>Changed the sampling and scheduling method yet again. Basic PixArt outputs should be way better now and a lot of times do not even need refining.</li><li>Removed Canny Edge ControlNet, because as mentioned the base is already better now and you do not need as much refining. Due to this the Unsampler settings changed as well</li><li>Added a few Set/Get nodes for a cleaner look</li><li>This workflow now uses the <a target="_blank" rel="ugc" href="https://github.com/Clybius/ComfyUI-Extra-Samplers">https://github.com/Clybius/ComfyUI-Extra-Samplers</a> custom nodes, but only the extra sampler coming with it. I found the best results seem to come from clyb_4m_sde_momentumized. Since I do not know how ComfyUI Manager handles this extension I am mentioning this here</li><li>I noticed the negative embedding I am using seems to be gone, you can try other SDXL negative embeddings, they seem to have an impact on the PixArt output</li></ul>

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