It is currently in beta, but I am planning on releasing the full version in the next few days.
Under the hood, it uses the GPT-4 preview model for most of the things as well as GPT-3 turbo, DALLE-3, and Whisper.
I started with using the assistant API, however, I switched over to using the completions API because I was not able to control the context, which meant higher costs.
There is a free plan available which allows 1 website and 5 versions. This should be enough for people to test it out and see how it works. I can bump the versions number if anyone wants to test it out more.
You can play with it at: https://chat.getsite.ai and see examples of websites built with it at: https://getsite.online.
Please let me know if you like it. Thank you!