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ZQ-Dev8 / microgpt.py
Created February 11, 2026 23:15 — forked from karpathy/microgpt.py
microgpt
"""
The most atomic way to train and inference a GPT LLM in pure, dependency-free Python.
Differences from GPT-2 are minor: rmsnorm instead of layer norm, no biases, square ReLU instead of GeLU nonlinearity, no weight tying.
The contents of this file is everything algorithmically needed to train a GPT. Everything else is just efficiency.
Art project by @karpathy.
"""
import os # for os.path.exists
import math # for math.log, math.exp
import random # for random.seed, random.choices