ID Grader vs GMA
Updated April 21, 2026
How ID Grader's instant AI pre-grade stacks up against Global Mint Authentication (Graded Mint Authentication) — and why most serious collectors use both.
The short answer
ID Grader and GMA solve different problems. GMA is a professional third-party grading company that physically inspects your card, assigns an official grade, and seals it in a tamper- evident slab. ID Grader is an AI-powered pre-grade app you run on your phone in seconds — before you decide whether to submit anywhere.
Head-to-head
| Feature | ID Grader | GMA |
|---|---|---|
| Cost | $1.99 per scan or less in bundles | Among the cheapest grading tiers in the market — a fraction of PSA's Value fee. |
| Turnaround | Seconds | Usually faster than PSA for bulk submissions. |
| Physical slab | No | Yes |
| Signature authentication | Yes, AI verdict against an exemplar library | Varies by tier / separate service |
| Sub-grades | Centering, corners, edges, surface — always returned | Depends on service tier |
| Best for | Screening cards before submission, pricing raw cards, building a collection database | Protecting personal-collection cards you want slabbed but don't plan to resell. |
Where GMA wins
Low cost makes it viable to slab cards that would never clear PSA's break-even math.
Where ID Grader wins
Instant verdicts, per-card cost measured in dollars instead of tens of dollars, no shipping, and built-in signature authentication that you can run at a card show before handing over money. Resale premium is minimal. Most serious collectors treat a GMA slab as roughly equivalent to a raw card.
The smart workflow
- Scan every submission candidate with ID Grader to get a full pre-grade in seconds.
- Only send the cards the AI rates a confident 9.5 or higher to GMA.
- Price or sell everything else raw with the AI sub-scores as evidence.
That single workflow change typically pays for ID Grader on the first submission batch you skip sending in.
Try ID Grader free
Get an instant AI pre-grade and autograph verdict on any trading card. No slabs. No submissions. No waiting.
Download ID Grader →