Grounded, not omniscientIt only knows what you gave it.
Most AI tutors know everything and cite nothing. This one only reads the PDFs in your class. When it answers, it names the page. When it can't, it says so — instead of inventing something plausible-sounding.
Always currentEvery PDF joins the index.
PDFs are read page by page as you upload them. If one fails to process, a nightly sweep tries it again — there's no button to press, because there shouldn't be one.
On a budgetMetered, so a busy class can't spend the day.
AI calls are budgeted per teacher; tutor chat and quiz generation share the same allowance. When it runs out, the app says when to try again — a whole quiz is one call, so a batch never fails halfway.