What are Artificial intelligence hallucinations? Why AIs sometimes make things up

When someone sees something that isn’t there, people often refer to the experience as a hallucination. Hallucinations occur when your sensory perception does not correspond to external stimuli.

Technologies that rely on artificial intelligence can have hallucinations, too.

When an algorithmic system generates information that seems plausible but is actually inaccurate or misleading, computer scientists call it an AI hallucination. Researchers have found these behaviours in different types of AI systems, from chatbots such as ChatGPT to image generators such as Dall-E to autonomous vehicles.