The worst part to me is the privacy nightmare with AI Studio. It's essentially impossible to tell whether any particular API call will end up being included in their training data since this depends on properties that are stored elsewhere and are not available to the developer -- even a simple property such as "does this account have billing enabled" is oddly difficult to evaluate, and I was told by their support that because I at one point had any free credits on my account that it was a trial account and not a billed account even though I had a credit card attached and was being charged. I don't know if this is true and there is no way for me to find out.

At some point they updated their privacy policy in regards to this, but instead of saying that this will cause them to train on your data, now the privacy policy says both that they will train on this data and that they will not train on this data, with no indication of which statement takes precedence over the other.