ChatGPT has wowed the world with the depth of its knowledge and the fluency of its responses, but one problem has hobbled its usefulness: It keeps hallucinating.

Yes, large language models (LLMs) hallucinate, a concept popularized by Google AI researchers in 2018. Hallucination in this context refers to mistakes in the generated text that are semantically or syntactically plausible but are in fact incorrect or nonsensical. In short, you can’t trust what the machine is telling you.