AI Card Grading vs BGS Sub-Grades

Both BGS and ID Grader break a card into the same four sub-scores: centering, corners, edges, and surface. The difference is where those scores come from and how you use them.

BGS sub-grades

A human grader assigns each sub-score on a 1–10 scale in 0.5 increments. A card with all four sub-grades at 9.5 or higher can qualify for a "BGS 10 Pristine" — which is rarer and often more valuable than a PSA 10.

ID Grader sub-scores

A vision model trained on graded reference data assigns the same four sub-scores in seconds from your phone. No shipping, no submission fee, no waiting.

Accuracy

On modern cards in normal lighting, a well-photographed scan lines up with the eventual BGS or PSA grade most of the time within a half-grade. Where the AI is strongest: centering (it measures pixels, not eyeballs). Where humans still win: subtle print defects and surface issues under angled light, where a $5,000 loupe beats a phone camera.

How to use both

AI first, slab second. Pre-grade every candidate with ID Grader. If all four sub-scores come back 9.5+ and you want the highest resale value, send the card in to BGS for the physical slab and official sub-grades. If any sub-score is below a 9, skip the submission and sell raw.