Stanislaw Lem, in 1971, with a wonderfully prescient description of LLMs in the story Non Serviam, from the book A Perfect Vacuum.

“It mimics the behavior of a man on the purely linguistic plane and nothing more. Nothing will amuse such a machine, or surprise it, or confuse it, or alarm it, or distress it, because it is psychologically and individually No One. It is a Voice giving utterance to matters, supplying answers to questions; it is a Logic capable of defeating the best chess player; it is—or, rather, it can become—a consummate imitator of everything, an actor, if you will, brought to the pinnacle of perfection, performing any programmed role—but an actor and an imitator that is, within, completely empty. One cannot count on its sympathy, or on its antipathy. It works toward no self-set goal; to a degree eternally beyond the conception of any man it “doesn’t care,” for as a person it simply does not exist. … It is a wondrously efficient combinatorial mechanism, nothing more.”