OpenEvidence does use an LLM. It's ChatGPT for doctors/medical research, tuned to give references in respected journals etc. Hospitals (at least US, Canada, UK)

OpenEvidence does use an LLM. It's ChatGPT for doctors/medical research, tuned to give references in respected journals etc. Hospitals (at least US, Canada, UK) allow and even encourage (US) staff to use it as a quick lookup, the way they'd otherwise Google for a dosage say, it just does that better. (My wife's a hospital doctor & author and introduced me to it; other family in other countries.)