Glossary/AI in Marketing/Large Language Model (LLM)
AI in Marketing
Large Language Model (LLM)
An AI model trained on vast text to understand and generate language.
By Brandon Mina·CEO, BrandPilot AI·Updated November 2026
Short answer
A large language model (LLM) is an AI model trained on vast amounts of text to understand and generate human language. It works by predicting likely sequences of words, which lets it answer questions, summarize, translate, and write copy. LLMs power chatbots, AI search, and many marketing tools, but they can produce confident errors.