Large language model (LLM)

A large language model is an AI system trained on large amounts of text that can understand and generate language.

Written by Reflective Data experts · updated Oct 5, 2026

LLMs power chat assistants, coding tools and many AI agents. They predict useful text based on context, which makes them flexible, but they can also state wrong things with confidence.

Grounding them in your own data, and checking their output, is what makes them dependable at work.

AI agent Hallucination Prompt engineering Retrieval-augmented generation (RAG)

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