Andrej Karpathy: Let's build GPT: from scratch, in code, spelled out. https://www.youtube.com/watch?v=kCc8FmEb1nY
Andrej Karpathy's Nano GPT is reasonably accessible and easy to run.
https://github.com/karpathy/nanoGPT
Andrej Karpathy's Nano GPT is reasonably accessible and easy to run.
https://github.com/karpathy/nanoGPT