1. Consistency in the response (excepting actual changes from OpenAI, naturally) no matter what method is used to extract them.

2. Evaluations done during plugin projects for clients.

3. Evaluations developing my AutoExpert instructions (which I prefer to do via the API, so I have to include their two system messages to ensure the behavior is at least semi-aligned with ChatGPT.

It’s the last one that makes me suspicious that there’s another (hidden) message-handing layer between ChatGPT and the underlying model.