That unending “Seinfeld” AI show is starting to seem more like “Westworld.” “Nothing, Forever” currently streams on Twitch in a 24-7 loop. In one-minute doses, the show uses AI tools like GPT-3 and Dall-E, all trained on classic ’90s sitcom scripts to generate miniature scenes of four different characters, each modeled loosely off the look and feel of “Seinfeld” in pixely, blocky colors. They are, of course, chatting about the minutiae of life and it is punctuated with awkwardly timed canned laugh tracks.