I'm finding some things I used to do aren't possible anymore - I receive the "I'm only an AI model and can't write in this language" for example.

I modify it to request a draft... and it does it.

There are some guard rails being put in. I think the experience of using this from the first moment (or close to) it was available also feels different.

Running one's own prompts again if you have tried different things is worth while.

Also comparing the output from the API to the Web interface is something I haven't had a chance to look into.