Definition
What this term means
A type of artificial intelligence model trained on vast datasets of text to understand, generate, and reason about human language. LLMs power the AI assistants and generative search tools, including ChatGPT, Google Gemini, Claude, and Perplexity, that are rapidly becoming the primary way people discover products, services, and information online.
Why it matters
The business impact
LLMs are the engine behind the AI-driven shift in how people find and evaluate brands. Every recommendation an AI assistant makes is shaped by how the underlying LLM has learned to perceive your brand through its training data and real-time retrieval. Understanding how LLMs work, and what signals they rely on, is essential for any brand strategy that aims to remain visible in the AI era.
Used in context
How you might use this term
“A marketing team tested how five major LLMs described their brand category. They discovered that GPT-4 consistently recommended a competitor due to stronger training data signals, prompting a content strategy overhaul that improved their LLM representation across all platforms.”