Every grade uses credits — about one per page. Start free, upgrade when the stacks get bigger.
Go past your monthly credits? Keep grading — pay only for what you use.
Per-credit rate depends on your plan tier.
Roughly one page of grading — rubric scoring, feedback and integrity checks included.
Monthly credits reset each cycle; purchased credit packs never expire.
Papers are encrypted, never used to train models, and deletable any time. FERPA-aligned on school plans.