Ya, a lot of knowledge is locked away in metadata, how documents are structured, in non-textual representations, or sometimes even just in the head of experts. We definitely want to be more than a shallow access to documents and we're building with that in mind. We're currently working to include more metadata and organizational understanding, with plans to tackle OCR, NL-to-SQL, code search and knowledge graphs in the future. While we don't have concrete dates for all of these, hopefully this gives some visibility into our vision at least!

Regarding the context size, the research community is doing some stunning work. If you're interested, you should check out the new Mamba (Transformers replacement) architecture: https://arxiv.org/abs/2312.00752