hallucinate

3 definitions • 6 examples

to seem to see, hear, feel, or smell something that does not exist, usually because of a health condition or because you have taken a drug:

He hadn't slept for several days and was hallucinating through exhaustion and dehydration.

He began hallucinating and hearing voices.

She hallucinated a person talking to her when no one was there.

When an artificial intelligence (= a computer system that has some of the qualities that the human brain has, such as the ability to produce language in a way that seems human) hallucinates, it produces false information:

LLMs are notorious for hallucinating – generating completely false answers, often supported by fictitious citations.

The latest version of the chatbot is greatly improved but it will still hallucinate facts.

to see or hear something that does not exist:

Police said the suspect was yelling incoherent statements as if he was hallucinating.