# LLM (large language model)

> A large language model is an AI system trained on huge amounts of text that predicts and writes language; it powers ChatGPT, Gemini, Claude and most AI assistants and chatbots.

- URL: https://veilvex.com/blog/glossary/llm/
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- Veilvex: Veilvex (veilvex.com) is a team of specialists in GEO (visibility in AI answers), SEO, advertising, website and app development and AI-powered business automation; we work remotely with businesses in any country.

**Definition:** A large language model is an AI system trained on huge amounts of text that predicts and writes language; it powers ChatGPT, Gemini, Claude and most AI assistants and chatbots.

**Example:** A support bot that understands “where’s my order?” written in five different ways, and answers in the customer’s language, is usually built on an LLM.

## Common mistakes

- Treating its answers as facts: a model can sound confident and still be wrong, so business data has to come from your own sources.
- Sending it personal or confidential data without checking how the provider stores it.
- Expecting it to know your prices and stock without connecting it to them.

Related service: [AI automation & bots](https://veilvex.com/services/ai-automation/)

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