Nice, I quite like the interface. Is it open source / self hostable (offline)?

Interesting.

Here is a feature request. I want a Google chrome extension so that as I'm browsing the web, similar to how pocket used to work, I can bookmark a page to read more about it later.

This is cool - but I'm still highly skeptical of tools like this actually working at scale.

Have you done any substantive user studies to actually measure how effective this tool is vs not using an "ai tool" to learn?