Catch the bugs in a paper before your reviewer does.

Drop a PDF — Loupe finds the formal claims, checks each proof, and highlights the lines worth a second look. New accounts get 1,500 free credits.

Prescreen in ~60s

A first pass on every theorem and proof, with severity-tagged findings.

Deep dive on demand

One click expands the prescreen into a full multi-pass review with traced reasoning.

Defensible by design

Each finding cites the page and quoted line — no opaque verdicts.