My personal opinion: all output from LLMs is hallucinations. The idea that it’s “right” or “wrong”, when stating factual information is really in the eye of the beholder/user. What year did astronauts land on the moon? — is a question that may or may not have a factual answer depending on your own beliefs. Philosophically, you would need to also define what a fact is, or what “not hallucinating” is, to define what a hallucination is. My understanding is that this property of the LLM architecture is innate, and until we have “world model” LLMs, or some other model that reasons from first principles, instead of the current “guess the next word” model, this isn’t going away. Just don’t rely on the for facts.