AI & DataBeginner
Hallucination
Pronunciationhuh-loo-sih-NAY-shun
Definition
When an AI model confidently says something false or invented, such as a fake source or a function that does not exist.
Where you hear it
Any discussion about trusting AI output.
Examples
The model hallucinated a function that does not exist in the library.
Always check the sources, because the answer may be a hallucination.
Common mistake
Copying AI-generated code without running it. Test everything the model writes.