Grade before
you send.
Institutional-grade AI analysis for serious collectors and investors. Predict PSA, BGS, and CGC outcomes before you pay a submission fee.
No credit card · 1 free scan every month
Supported categories
A premium experience for serious collectors.
Four steps from snapshot to investment-grade report.
Sub-grade analysis
Centering, corners, edges and surface — individually scored with computer vision.
Instant results
Reports generated in under 30 seconds. No waiting weeks for a verdict.
Submission insight
Know if it's worth sending to PSA, BGS, or CGC before paying the fee.
Every TCG supported
Pokémon, Yu-Gi-Oh, MTG, sports cards, vintage — one platform for your collection.
Why GradeB4
Built for the serious collector.
A premium pre-grading platform calibrated to feel like a human PSA-style review — not a raw AI dump.
AI-Assisted Pre-Grading
Computer vision trained on hundreds of thousands of graded cards estimates your grade in seconds.
PSA-Style Calibration
Conservative, human-style grading — softens hypersensitive detections and avoids false damage flags.
Forensic Image Analysis
Sub-grade detection for centering, corners, edges, and surface — with a visual defect map.
Human Grader Interpretation
Plain-English notes from an AI grading judge, not robotic technical readouts.
Grading Confidence
Every report includes a confidence score and likely grade range so you know what to trust.
Investment Insight
Decide whether to submit, hold, or pass — before paying official grading fees.
Pricing for every collector.
Start free. Upgrade when your collection demands it.
- Sub-grade breakdown
- Delayed unless you use a priority token
- No defect map
- Detailed report with defect map
- Priority AI queue
- Cancel anytime
- Everything in Unlimited
- Instant results — no queue
- Full defect map
Trusted by collectors.
"Saved me $300 in submission fees on a card I thought was a 10. Turned out to be an 8."
"Pre-grading 50+ Pokémon cards in an afternoon used to be impossible. Now it's coffee-break work."
"The sub-grade breakdown is shockingly close to what PSA gave me back two weeks later."
Frequently asked.
Grade before you send
Know before you submit.
Join thousands of collectors using AI to make smarter, more profitable submission decisions.
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