Lenny the LLM – You will learn how LLMs work from this fun short story
A short story called "Lenny the LLM" explains how large language models work through a fun, accessible narrative, illustrating the inner workings of an LLM in an engaging way for readers.
Background
Ivo Kund's "Lenny the LLM" uses a fictional short story to explain how large language models (LLMs) like ChatGPT, Claude, and Gemini actually work — from the inside out, as if the model itself were a conscious being. The piece is notable for demystifying concepts like tokens, attention mechanisms, next-token prediction, and the lack of true "understanding" or memory, all in an accessible narrative form. This matters because LLMs have become widely used in 2023–2025, yet most people — even tech-savvy readers — don't grasp their fundamental mechanics or limitations (e.g., why they hallucinate, why they can't remember past conversations beyond their context window). The story serves as a gentle, memorable introduction to these ideas without requiring a machine learning background.