Hallucination

Using AI

When an AI confidently states something false - inventing facts, sources, or details that do not exist.

Language models generate text by predicting what sounds plausible, not by checking a database of facts. When the model does not know something, it can produce a fluent, confident, completely made-up answer - a fabricated statistic, court case, or citation.Hallucinations are the single most important limitation to understand. Verify anything factual that matters, ask for sources, and prefer tools that ground answers in real documents.