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Neural networks, transformers, and LLMs explained from first principles—with working implementations you can run and modify.

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Deep dives into AI concepts with production-ready code examples

Deep Learning

Building Attention from Scratch

Implement the attention mechanism that powers transformers, from matrix operations to multi-head attention, with clear PyTorch code.

12 min read Advanced
LLMs

GPT from Scratch in 500 Lines

Build a miniature GPT model that actually generates coherent text. Covers tokenization, positional encoding, and training loops.

18 min read Advanced
Fundamentals

Vector Embeddings Explained

Why do LLMs represent words as vectors? Learn the intuition behind embeddings and build your own word2vec implementation.

10 min read Intermediate