Introduction
A glossary of AI, machine learning, and LLM terms — short definitions with links to the full lessons and external sources.
Short, linkable definitions for terms used throughout the course. Each entry links to the lesson that covers it in depth, related terms, and an external canonical source. Use this when you hit an unfamiliar term and want a quick answer instead of a full lesson.
Browse the full alphabetical indexA-Z IndexEvery term in the glossary, alphabetically, on one page — for browsing or jumping straight to a specific one., browse by topic in
the sidebar, or jump to a term directly at /reference/<term> — e.g.
/reference/transformerTransformerThe transformer is the neural network architecture built around self-attention, introduced in 2017, underlying essentially all modern LLMs..
Have a broader question that doesn't map to one term or lesson — like whether RAG is the same as fine-tuning? Check the FAQ.