Very nice. This post both reminded me that upscaling is a thing, and that newer, better models more suited for pony have been made. I think the last time I had upscaled anything was like a year and a half ago.
I updated to the latest version of cupscale, grabbed some new models, and gave it a quick test with what I think are great results.
Take this Chrysalis pic for example. It was made by one of ((those)) artists who don't release their full artworks, instead hiding them behind multiple layers of annoyance. In this case, the annoyance in question is DeviantArt.
The thing about DeviantArt, and what this artist does, is that you can set it so that people cannot view or download the original file. Instead, the site serves you a copy of the original that has been scaled down and had the quality reduced by 25%, introducing artifacts and pixelization.
Back in the old days you used to be able to browse the page source to bypass this, allowing you to grab the original file, but apparently this either doesn't work anymore or I'm too stupid to figure it out.
What I did manage to figure out, however, was to get the downscaled image, but at 100% quality.
So I took that, scaled it up with SuperPony 4x V2, then manually scaled the image back down to the artists original dimensions of 3508x2480.
While I was at it, I gave the image a little edit. You can see in the original that Chrysalis has a bit of a frown at the corner of her mouth. I don't like that, it makes her look unhappy with the situation. A slight adjustment gave her a more neutral expression, hinting at a smile. Changes the whole feeling of the image in my opinion.