> I'll bet they had LLM or better in the 80's and the tech we have now is the consumer-grade version they seeded into industry in the 2020's.

They didn't have LLMs but they did have "AI" already (for a fair while by then). It wasn't much anything like what we have now really, but it did exist and by the current standards of that time period it was pretty much straight out of science fiction. (Imagine how shocked they'd be seeing what all we have now. "Supercomputers" in nearly every pocket, widespread broadband Internet, LLMs, etc, etc.) You're definitely right though in thinking that they had technologies far beyond what they told the public about. That's been the case since before my own lifetime at least, and absolutely certainly still true today.