Yep - full export will always be supported for your data.
No customer # restriction.
I have some optimizations in the works such that the secondary gpt 3.5 call only gets triggered when one iterative conversation thread ends (determined via a timeout). GPT 3.5 is really cheap though, so shouldn’t be a huge deal. Even if you chat with gpt4 we still use 3.5 for the memory consolidation and updates.