If you want factual, how about the source material the LLM was trained on?

If you want human interaction, you will probably have to deal with people being messy (just as LLMs are - they just hide it better beneath a veneer of sickly „politeness“).

The closest analogy might be to move somewhere where you can get slaves, find a few well-educated ones and interact with them like you would with an LLM. You could even make some psychedelics available to them so they can occasionally hallucinate a bit.