Why Does GPT Do Better on Grounded Tasks Than Open-Ended Knowledge?

https://www.pawn-bookmarks.win/why-lower-hallucination-rates-don-t-always-mean-a-better-reasoning-model

In my decade working at the intersection of enterprise search and applied machine learning, I have learned one immutable truth: the moment you ask an LLM to rely on its "internal knowledge," you have already lost