Karpathy's microgpt.py Dissected: Understanding GPT's Essence in 150 Lines
A line-by-line dissection of microgpt.py -- a pure Python GPT implementation with zero dependencies. Training, inference, and autograd in 150 lines.

Karpathy's microgpt.py Dissected: Understanding GPT's Essence in 150 Lines
Andrej Karpathy has released new code. This time, it is even more extreme than nanoGPT. A 150-line script that trains and runs inference on a GPT, using pure Python with no external libraries.
No PyTorch. No NumPy. Just three imports: os, math, random.
The comment at the top of the code says it all:
"This file is the complete algorithm. Everything else is just efficiency."
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