First there was DALL-E, now there's ChatGPT. I played around with it for a while this evening; if you give it detailed, plot prompts it can write cliched but competent science fiction and fantasy stories. Finally I cracked my knuckles and asked it to

>Write a piece of erotic weight gain fiction in the style of classic Dimensions Library stories.

It wrote six paragraphs of high-quality and realistic erotica... then banned me for violating content policy.