This looks really interesting and functional - your intro video has me thinking of all sorts of use cases. Itwould be good to know what powers it - I couldn't

This looks really interesting and functional - your intro video has me thinking of all sorts of use cases. Itwould be good to know what powers it - I couldn't work that out from the page at https://www.rtrvr.ai/docs https://www.rtrvr.ai/docs. Is it based on an OpenAI LLM for example, or something bespoke?