They really should have an API available. It's difficult to get a good idea of the quality of their model otherwise. For example, I just created a benchmark based on NYT Connections, and I don't mind paying for access and I'd love to add Inflection, but having to jump through hoops with Selenium or whatever seems so unnecessary.
I tried asking the Pi model some questions and it has gotten much, much better since I last tried it a few months ago. Night and day.