CLAIMS / TESTED, NOT TRUSTED
Other people’s claims.
Same rules.
This site started as a place to publish our own numbers with their losses attached. It tests other people’s now, too — a launch page, a post on X, a vendor’s bullet point — from the outside, with the protocol frozen before the first query and everything published whole: holds, does not hold, and whatever our own instrument got wrong on the way. Nobody asks us to. The subject gets no edit and no veto. When a claim holds, we say so at the same weight.

THE REGISTER
Five so far.
ASSAY-001: Jev, checked
TypeSafe AI’s launch claims — “calibrated probabilities,” “never makes type errors.” Pre-registered, run once, re-scored blind on a different model. Half holds: calibrated on one corpus of two; zero type errors in 8,576 responses.
A stealth model, checked
A post on X: a free stealth model “matches GPT-6 Astra at 18x lower price.” Tested the same day. Performance holds on our suite; the price claim expired by nightfall. Our ruler had eight defects, found by us and by a second reviewer, all published with the raw responses.
Shuffle the options
A probe on Jev: reorder the options and 5.3% of answers change; same order, same day, 0%. Every flip sat below 0.9. One pass, rule frozen first, every response public. Probe, not an engagement.
The register
Fourteen independent measurements of Jev’s calibration, each read from the author’s own file: what, how many, which field, frozen first or not. Not re-scored by us. A register, not verification.
ASSAY-002: Snap, checked
SubQ’s Snap preview, measured on the same two corpora as ASSAY-001. Hash posted before the first call, run once, re-scored blind on a different base model. Banking77 inside the 0.05 line; CLINC150 outside it, underconfident; zero type errors in 25,730 responses.
HOW ONE GETS HERE
The rules, in order.
The claim is quoted verbatim from where it was made. The protocol — corpora, metrics, pass criteria, budget — is written and hashed before any query. Positive controls must go red and green before a real number is computed. One run, no retries, no prompt tuning. Every request and response is logged and published. Where our own scoring is involved, a second party on a different base model re-scores or tries to break it, and what they find is printed as a numbered amendment. Then the result ships whether it flatters the subject, us, or neither.
Want a claim of yours run this way before someone else runs it? That is the paid service: the ASSAY practice ↗. The free version is the method itself, open source: assay-kit ↗ — run it on your own claim and the result is stamped SELF-ASSAYED. Only an independent party can make it ASSAY-VERIFIED.