I'm half shocked this wasn't on HN before? Haha I built PicoGPT as a minified fork with <35 lines of JS and another in python

And it's small enough to run from a QR code :) https://kuber.studio/picogpt/

You can quite literally train a micro LLM from your phone's browser

It was: https://news.ycombinator.com/item?id=47000263

there is no source code AND There is no option to include your own file or text to train. It trains just some stupid names. Zero value imo