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I have a stupid question. I saw someone below ask about compatibility with A1111. Why can't I just use this like I use any of the 10s of 1.5 models I have dow

I have a stupid question. I saw someone below ask about compatibility with A1111. Why can't I just use this like I use any of the 10s of 1.5 models I have downloaded? Does SDXL use a different inference tech or something? I have the same question with SDXL overall but I understand the refiner is important there. I have stuck with 1.5 because SDXL wasn't that exciting to me and ultimately I haven't been clear what software needs to change (and how/why) to be "compatible"

brucethemoose2 3y ago
> Does SDXL use a different inference tech or something. Its extremely similar, but not drop-in compatible, no. Whats more, small changes make it compatible, but larger changes are needed for SDXL to work well. Personally I find SDXL to be a huge upgrade, at the cost of performance, hence I am using Fooocus but keeping an eye on https://github.com/FizzleDorf/ComfyUI-AIT https://github.com/FizzleDorf/ComfyUI-AIT As I have been preaching on HN, just don't use A1111 for SDXL.
- MrNeon 3y ago
  >As I have been preaching on HN, just don't use A1111 for SDXL. Why, what am I missing by doing so?
  - brucethemoose2 3y ago
    Better speed or quality in other UIs. Less jankiness. For me, personally, better hackability, especially in `diffusers` UIs (though Comfy-based UIs seem to be SOTA for SDXL). EDIT: Also, other user interfaces are more "suited" to SDXL and its presets+style prompting. A1111 is very much built for SD 1.5
- scoopdewoop 3y ago
  Hah, one of your comments weeks ago got me to try Fooocus-MRE after getting nowhere with SDXL on A1111. Absolutely blew away my previous results in so much less time. I was able to illustrate a whole TTRPG session in an hour or two.
  - brucethemoose2 3y ago
    Well now Fooocus MRE is obsolete :P. The dev shuttered it, but most of the functionality is now upstreamed into the advanced/debug menus of Fooocus. And yeah, the difference is dramatic!
yreg 3y ago
I (for similar reasons to yours) didn't do the upgrade 1.5 -> SDXL until last week. I found the upgrade totally easy in the end. I just had to update A1111, download the sdxl model, download the sdxl refiner model and set the refiner in the refiner dropdown. That's it. So compared to other models it is just one additional dropdown click. You won't be able to use the LoRAs, etc. you are used to, but you can download new ones that are compatible with SDXL.

brucethemoose2 3y ago

> Does SDXL use a different inference tech or something. Its extremely similar, but not drop-in compatible, no. Whats more, small changes make it compatible, but larger changes are needed for SDXL to work well. Personally I find SDXL to be a huge upgrade, at the cost of performance, hence I am using Fooocus but keeping an eye on https://github.com/FizzleDorf/ComfyUI-AIT https://github.com/FizzleDorf/ComfyUI-AIT As I have been preaching on HN, just don't use A1111 for SDXL.

MrNeon 3y ago
>As I have been preaching on HN, just don't use A1111 for SDXL. Why, what am I missing by doing so?
- brucethemoose2 3y ago
  Better speed or quality in other UIs. Less jankiness. For me, personally, better hackability, especially in `diffusers` UIs (though Comfy-based UIs seem to be SOTA for SDXL). EDIT: Also, other user interfaces are more "suited" to SDXL and its presets+style prompting. A1111 is very much built for SD 1.5
scoopdewoop 3y ago
Hah, one of your comments weeks ago got me to try Fooocus-MRE after getting nowhere with SDXL on A1111. Absolutely blew away my previous results in so much less time. I was able to illustrate a whole TTRPG session in an hour or two.
- brucethemoose2 3y ago
  Well now Fooocus MRE is obsolete :P. The dev shuttered it, but most of the functionality is now upstreamed into the advanced/debug menus of Fooocus. And yeah, the difference is dramatic!

yreg 3y ago

I (for similar reasons to yours) didn't do the upgrade 1.5 -> SDXL until last week. I found the upgrade totally easy in the end. I just had to update A1111, download the sdxl model, download the sdxl refiner model and set the refiner in the refiner dropdown. That's it. So compared to other models it is just one additional dropdown click. You won't be able to use the LoRAs, etc. you are used to, but you can download new ones that are compatible with SDXL.