It’s been a long time since I used OpenEvidence. I never had to enter a NPI when I began using it, maybe they updated their account set-up requirements….

I switched to perplexity.ai many months ago and like the fact that it provides direct links to the all source materials it uses in for its answers.

As soon as Grok3 was available I began using it and now use it almost exclusively, although I wish it would provide direct links to its source materials like perplexity.ai.