What is AI Hallucination? Simple Explanation (2026)
AI Glossary
What is AI Hallucination?
Definition: AI hallucination occurs when an AI model generates information that sounds plausible but is factually incorrect or entirely fabricated. This is one of the biggest challenges with current AI tools.
How Does AI Hallucination Work?
LLMs generate text by predicting probable next words based on patterns, not by retrieving facts from a database. When the model is uncertain, it may produce confident-sounding but incorrect information. This is why fact-checking AI outputs is essential.
Examples
Fabricated citations, incorrect dates, made-up statistics, non-existent products or companies, false historical events
Related Reading
Learn more about how AI Hallucination is used in practice:
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