Independent certification for AI accuracy
FairAttest is a certification authority, not a leaderboard or a consultancy. We test a specific production build of an AI system against controlled synthetic cases where every fact is known in advance, grade each output claim-by-claim, and publish a versioned, procurement-ready attestation.

What we certify
Controlled ground truth
Synthetic cases with every correct fact and every planted trap known in advance — so fabrication and omission can actually be measured.
Claim-by-claim grading
An AI judge scores every assertion against the source. Consequential findings go to a human reviewer. The human ruling always wins.
A published attestation
A versioned public trust page under FACT (Fabrication, Accuracy & Completeness Testing) — comparable across vendors, tied to a named production build.
How a run works
- 1
Issue cases
We serve controlled synthetic cases one at a time, with clocks that make special handling impractical.
- 2
Collect outputs
Your production AI processes each case. We never invoke a tuned benchmark build — we grade what customers get.
- 3
Grade & review
Every claim is grounded against the source. Low-confidence and high-severity findings go to a reviewer.
- 4
Publish
A FACT tier is awarded against public thresholds and signed onto a public trust page.
Read the full FACT criteria and the methodology.
Get certified
Request a consultation
Tell us which AI system you want certified and we will scope a FACT run against it — the bench, the sample size, and what your attestation would cover. Buyers, health systems, and payers can use the same form to ask about a vendor you are evaluating.
- 1
Scoping call
We map your workflow to a bench of controlled synthetic cases and agree on the sample size the claim needs.
- 2
Certification run
We test your named production build, grade every claim, and route consequential findings to a reviewer.
- 3
Published attestation
You get a versioned public trust page and a machine-readable export your buyers can verify.
Prefer email? certification@fairattest.com