To some degree *all* LLM's answers are made up facts. For stuff that is abundantly present in training data those are almost always correct. For topics which are not common knowledge (allow for a great variability) you should always check.
I've started to think of LLM's as a form lossy compression of available knowledge which when prompted produces "facts".
I've started to think of LLM's as a form lossy compression of available knowledge which when prompted produces "facts".