It pretty much sounds like they are doing what they said they are going to do? Expecting some sort of free API feels like entitlement to me. Have you tried running the models? Or training them? They get expensive very very fast. They charge a pretty reasonable amount all things considered. If they didn't have the name "Open" in them and or started as a subsidiary of one of the other 3 tech companies things would have gone a very very different route.
