There is a small community on Reddit doing the same. They are spread across a few subs, so I put together an aggregate https://www.reddit.com/user/corysama/m/gan_art/top/?sort=top...
You can play with it for free using Google Colab notebooks given only a Google account. But, the most popular notebook is in Spanish https://colab.research.google.com/drive/1go6YwMFe5MX6XM9tv-c... and so are it's instructions https://tuscriaturas.miraheze.org/wiki/Ayuda:Generar_im%C3%A... You can ask the AI in Google Translate to help you ask the AI in the notebook to make some art.
Addressing some concerns brought up here:
Yes. It feels more like exploring than painting. Often it feels like watching a small child draw and trying to steer what is drawn. Like when I tried to ask for storm clouds made out of lava https://www.reddit.com/r/bigsleep/comments/o033x1/playing_wi... the AI was like "No, Dad! Lava stays on the Ground!"
But, I still believe that "It is Art". (As much as I and everyone else hate that whole debate.) I think of "Can a computer make Art?" the same as "Can a brush make a painting?" Unless you are finger painting, you don't make the image. The brush does. But, without you, the brush out be inert. Or, at least undirected.
With the GAN, random noise inputs get random noise outputs. Finding interesting results is a lot of work. Much like finding an interesting sculpture within a block of stone. "Interesting (to humans)" being the key word that brings the humanity into the process.