AI itself isn't explicitly banned from this jam, but you of course must have the legal right to use all of the assets in your game, which means that AI tools trained on the wide open internet without the permission of the artists that it learned from are not allowed to be used. So the answer is "it depends" on how the model was trained, and what you're asking it to do. As long as neither is breaking copyright, it should be OK.
I hope that helps. 👍