Safety & ethics
AI Dictionary
Hallucination
When an AI confidently gives an answer that is wrong or made up.
Language models predict likely-sounding text; they don't check facts by default. In images and video, the equivalent is odd details like extra fingers or melting objects.
Example
A chatbot invents a feature that an AI tool doesn't actually have.
Why it matters to you
Always double-check important facts, especially numbers, names and links.
Related terms
LLM (Large Language Model)An AI model trained on huge amounts of text so it can understand and write language. RAG (Retrieval-Augmented Generation)A technique where an AI looks up relevant documents first, then answers using them. BiasWhen an AI system gives unfair or one-sided results because of patterns in the data it learned from.