AI · Term
Large Language Model (LLM)
A large language model (LLM) is an AI system trained on vast amounts of text to predict and generate language, powering tools like ChatGPT, Claude, and Gemini.
LLMs generate answers by predicting likely sequences of words, informed by patterns learned in training and, increasingly, by retrieving current information from the web at query time. That retrieval step is where GEO applies: the clearer and more trustworthy your content, the more likely a model is to use and cite it.
For a complete, plain-English explanation — how LLMs work, from tokens and transformers to training and inference, the major models in 2026, what they get wrong, and how they are reshaping search — read our full guide: What Are Large Language Models (LLMs)?
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