Large Language Model (LLM)
A Large Language Model (LLM) is a type of AI built to understand and generate human language. It’s the technology behind tools like ChatGPT and Claude. An LLM learns by training on enormous amounts of text, including books, articles and websites. From all this text, it picks up the patterns of how language works. The ‘large’ refers to both the size of the training data and the number of internal settings the model uses to make sense of it.
Once trained, the model generates text by predicting one word at a time, based on the prompt and everything written so far. It doesn’t truly know facts or understand meaning, so it produces what is statistically likely. This is why an LLM can sometimes state false information with complete confidence.
See also: Generative Engine Optimisation (GEO), AI Overviews
