The hallucinations are part of LLMs. No matter how "reliable" they are advertised as, it is not the AI we've read about in Sci Fi novels. It will always be, fundamentally, a next word prediction model. It doesn't know what facts are, just what they look like.

I feel like someone years ago told Trump that people were seeking 'asylum' in the USA, and ever since, Trump has been repeating the lie that people from foreign mental institutions are in the USA to immigrate.