How LLMs work
A from-the-ground-up walkthrough of how modern LLMs work, from tokens to transformer blocks to the next-token loop
AI Summary
Modern LLMs are built by stacking transformer blocks, and the article explains their core mechanisms without heavy math. Tokenization converts text into integer token IDs using subword pieces, balancing efficiency and generalization. The walkthrough covers tokens, transformer blocks, and the next-token loop to help readers understand LLM architecture and model cards.








