A lot of people have deep misunderstandings on what the massive data centers are for. While they do use a decent portion of them to run requests, as they’re trying to service a lot of people, a big chunk is training and data processing. Not for the end user, but for their R&D, model production, and the endless churn of data processing as they find and create new data to incorporate in models.

Which is how you can run pre-trained LLMs on your computer, if it’s a good one.