There are no trustworthy LLMs. They don't know it understand what they're saying - they're literally just predicting words that sound like they match what it was taught. It's a only barely smarter than a parrot, and it has no idea how to research anything or tell facts from made-up bullshit. You're wasting your time by trying to force it to do something it's literally incapable of doing.

You're better off researching them the hard way; check primary sources and then check the credibility of those sources.