Now, Jensen Huang — the real one — says this is the era of personal supercomputing. Anybody with a laptop can make their own AI models. The only thing you need is to know what you are doing. Three years ago, I started fine-tuning a local model to help me draft emails. It works in airplane mode. Nobody else sees my email until I hit send. I still own every word. These small, fine-tuned models run efficiently on personal hardware. Sakana AI's document-to-LoRA tool, for instance, can turn an entire speech transcript into an adapter in about one second. I trained on 2,000 of my own public transcripts in roughly 20 minutes on a MacBook. Give it a try at home.