I’ve used an LLM that provides references for most things it says, and it really ruined a lot of the magic when I saw the answer was basically copied verbatim from those sources with a little rewording to mash it together. I can’t imagine trusting an LLM that doesn’t do this now.
Which one?!
Kagi’s FastGPT. It’s handy for quick answers to questions I’d normally punch in a search engine with the same ability to vet the sources.

FastGPT

Nice! I’ve bookmarked it.

I’d hate to defend an llm, but Kagi FastGPT explicitly works by rewording search sources through an llm. It’s not actually a stand alone llm, that’s why it’s able to cite it’s sources.