A hallucination is a false statement that an AI phrases convincingly, such as made-up numbers, quotes or sources.
Illustration: AI-generated · AI Compare Ninja · CC BY 4.0
Example
The AI cites a court ruling with a case number that never existed.
For pros
Language models produce likely text, not checked facts. The risk drops with grounding (RAG, web search) and clear instructions. Always check important details yourself.
