At The Mountains of Madness by Lovecraft except it's a guy exploring a fan wiki and getting real freaked out by each new wiki page

One of the most remarkable technological developments of the last few years has been straight from the pages of H. P. Lovecraft's At the Mountains of Madness: the elite nerds of corporate technology have constructed themselves something that's very much like a shoggoth, a practically shapeless mass of technological promises that's sold as the solution for literally every conceivable problem. It's almost become "superintelligent" (any moment now!) and sure, maybe it'll decide to kill us all, but presumably this catastrophe will be prevented so long as OpenAI gets a bigger share of the public treasury. Meanwhile the AI shoggoth, like Lovecraft's, is struggling to learn how to mimic speech and painting and other human skills.

In the backstory of At the Mountains of Madness, the alien beings who once occupied Earth before humanity did, the radially symmetrical "Elder Things" or "Old Ones", created and trained the shoggoths as technological servants (slaves, really) and, as the Elder Things' civilization sank into decadence, they grew increasingly dependent upon the shoggoths' abilities, and eventually there was rebellion and war, wiping out the Elder Things' society. Only the shoggoths remain as living survivors of their civilization. Lovecraft regards this as horrific of course but really it's fascinating: the implication is that the shoggoths, who are capable of learning, might one day build a civilization of their own.

The very shapelessness of the shoggoths, both the Elder Things' shoggoths and the modern-day AI versions of them, seems almost symptomatic of decay.

(cw: discourse about the decayed state of human technology leading to speculation about humanity's possible extinction)

y'know it'd be kinda funny to write a sequel to "At the Mountains of Madness" by Lovecraft where an archaeologist from a modern perspective rips the findings apart for being unscientific and making out a bunch of murals to be literal recountings of actual history

like "the author took a carving of a flying barrel on a background of star symbols as evidence that the Leng peoples literally physically flew through space with their wings, which (though obviously unnecessary) we have long since disproven by discovery of the now-commonly-understood space worthy vessels amongst the Leng ruins that were excavated on a return expedition a scant few years after"