AI
Large Language Model (LLM)
The short answer
A large language model is the type of AI system — like the ones behind ChatGPT, Gemini, and Claude — trained on huge amounts of text to understand and generate human language.
Full explanation
LLMs power both the chat experience you type into directly and the "AI Mode" or "AI Overview" features layered into search engines. When an LLM is connected to live web search, it can look up current pages and cite them in its answer, which is the mechanism GEO is built around.
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