Interesting how they claim to be "framework-agnostic" but only support React and don't really integrate with any backend framework. I've been building something that helps create proper framework-agnostic libraries[0], I even use AI chat as an example.
It supports vanilla Js, so that covers all frameworks. I see your pain, I built predictabledialogs.com and didn't expect OpenAI to do a no code builder and a chat widget. eeks I was hoping they will aim for AGI while we do the boring work.
[0] https://fragno.dev/