Large Language Model (LLM)
beginnerA large language model is an AI trained on vast amounts of text to predict and generate language. It powers tools like ChatGPT, Claude and Gemini — it can write, summarise, classify and answer, but it predicts plausible text rather than 'knowing' facts.
For your business
The LLM is the engine inside most AI tools you'll buy. You rarely choose one directly, but it shapes cost, quality and data handling — so it's worth knowing whether a vendor uses a frontier model or a cheap one behind the scenes.