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Building the Ghost in the Shell

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Building the Ghost in the Shell
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@karpathy
karpathy / microgpt.py
Last active February 17, 2026 02:44
microgpt
"""
The most atomic way to train and run inference for a GPT in pure, dependency-free Python.
This file is the complete algorithm.
Everything else is just efficiency.
@karpathy
"""
import os # os.path.exists
import math # math.log, math.exp