Particularly when talking computers are an extremely common trope in scifi, and had been for at least three decades before Stephenson wrote The Diamond Age, as for that matter had primitive chatbots.

The aspects of the setup for the Primer I remember (handcrafted by an individual for a specific end, reliant on human voices for narration, far-future advanced technology all around) don't feel at all like "predicting ChatGPT" either.