I've been working on my own framework for several years now. I chat to AI about it but otherwise it is hand coded. It is interesting looking at how much effort goes into framework development when in theory an AI can spin up precise code that does just what is needed for the situation, assuming it isn't hallucinating or going off the rails of course. But I don't think we have seen a truely vibe coded, AI just doing what is optimal framework come out of the woodwork even though the space has had a lot of time to show something. I'm interested to see what it looks like when it happens.