lucapug / LLMs-from-scratch

Implementing ChatGPT-like LLMs from scratch, step by step - code of the new book from Sebastian Raschka

Build a Large Language Model (From Scratch)

In Build a Large Language Model (from Scratch), you'll discover how LLMs work from the inside out. In this book, I'll guide you step by step through creating your own LLM, explaining each stage with clear text, diagrams, and examples.

The method described in this book for training and developing your own small-but-functional model for educational purposes mirrors the approach used in creating large-scale foundational models such as those behind ChatGPT.

• Link to the official source code repository
• Link to the early access version at Manning
• ISBN 9781633437166
• Publication in Early 2025 (estimated)

Table of Contents

Chapter	Main code	Code + supplementary
Ch 1: Understanding Large Language Models	No code	No code
Ch 2: Working with Text Data	ch02.ipynb dataloader.ipynb	./ch02
Ch 3: Understanding Attention Mechanisms	ch03.ipynb multihead-attention.ipynb	./ch03
...	...	...
Appendix A: Introduction to PyTorch	code-part1.ipynb code-part2.ipynb DDP-script.py	./appendix-A

(A mental model summarizing the contents covered in this book.)