Build a Large Language Model (From Scratch)

ABSTRACT

This highly anticipated release takes readers on a deep, code-first journey into the inner workings of foundation models. Author Sebastian Raschka guides developers step-by-step through constructing a fully functional GPT-style model using pure PyTorch. The book demystifies the entire pipeline, from coding custom attention mechanisms and handling tokenization, to pre-training on unlabeled data and fine-tuning for specific instruction-following tasks. It bridges the gap between high-level APIs and low-level matrix math, offering an unparalleled foundational understanding.