A) This raise a huge issues with IP and HIPAA. Unless you add specific limitations of model per customer with 0 shared information
B) I do not know what kind of product discovery process you did to think that "industry benchmarks" are what your customer wants, but its not. As an analytics startup owner I can tell you these are the kind of low effort "Features" people tell themselves their customer wants and its never holds when you actually perform discovery.
C) This is maybe something you want for your next VC round? do you need to shove proprietary LLM model to expand the valuation? I hope you do not crash and burn doing this.
D) When I opened my current startup I started with Sentry without even thinking about it, as it was what I used in my last company and it just worked. Sure as hell going to checkout Datadog and the alternatives as we speak. We are currently on a monthly plan, you tell me I have until Jan 26 to drop the service?