Interesting. Why wouldn't an LLM based search provide the same thing? Just ask it to "use only trusted sources".
There is trust and then there is accountability.
At the end of the day, a business/practice needs to hold someone/entity accountable. Until the day we can hold an LLM accountable we need businesses like OpenEvidence and Harvey. Not to say Anthropic/OpenAI/Google cannot do this but there is more to this business than grounding LLMs and finding relevant answers.
What patterns would you look for in this kind of dataset?