What is a large language model (LLM) and how does it generate text?

A large language model is a machine learning system trained on huge amounts of text from the internet and books. It learns patterns in language — what words usually come next, what makes sense in context — and uses those patterns to predict and generate text one word at a time.

A large language model is like a language prediction machine on steroids. It was trained on billions of words, so it learned patterns in how humans write and speak. When you ask it a question, it doesn't look up an answer — it generates a response by predicting what word should come next, then the next one, and so on. It does this so fast and smoothly that the output sounds natural and thoughtful.