I have been testing the free versions, with some very limited success, to work as a sort of Co-GM. At least in theory, it sounds awesome. to be able to have AI open so If I need a quick, NPC, location, or something, I could just ask it for one. The idea is that the AI could know the system, setting, and type of things I need. Allowing for more fitting content and fewer "barry blue jeans" in my worlds.