I had a bit of a second thought with my arguments in the previous post (forum #414501) because of when these were posted to Pixiv, but now I think I've got a better argument and now I've decided to just make a new post rather than editing my previous one multiple times.
While 2022 is the earliest year AI-generated art first appeared in Danbooru, AI-gen tools have existed before, and Artbreeder has been one since at least 2019. Of course, these were not as as the tools that exist now, but as shown in website's gallery from late 2021, it's capable of generating scenery.
Most of JAChrysant's posts on Pixiv date before February 2022, the oldest being posted in December 2021. Most of the posts have a resolution of 828x512 with the notable exception of post #9632865, which was posted to Pixiv in 2025.
If you go to Artbreeder's gallery some of the scenery posts have a resolution of 828x512 (such as this one)
In post #9759963, the trees look smudgy and the anatomy of one of the trees on the right doesn't really make sense. The leaves in the top in post #9759862 looks like it's blending with the sky. There's a dark patch of something in post #9759797 that I'm not sure what that's supposed to be, and note the broken tree structures too.
If these are AI-generated then they might be the oldest AI-generated posts to be posted here.
