The best-known tools return a percentage on a piece of text. Uthentic starts from a broader question: is this content — photo or text — authentic, retouched or generated? And above all, on what evidence are we deciding that?
GPTZero and ZeroGPT were built for text. Uthentic also reads images: it tells apart a photo that was actually shot, a real photo edited with software, and an image generated from scratch. These are three different cases, and they deserve three different verdicts.
A single detector always fails in the same way. Uthentic queries independent engines, compares their readings, and says so clearly when they disagree, instead of picking whichever number is convenient.
The report shows exactly where to look: suspicious areas, lighting conditions, file data, and for text, the passages that weighed on the verdict, one by one.
On heavily compressed images or very short texts, Uthentic declares insufficient evidence. It's less impressive than a confident percentage, but it's the only honest answer.
Every analysis can become a PDF with a file fingerprint and a verification QR code, ready to attach to a newsroom submission, a client file or a case.
Uthentic works from the browser and as an app on iPhone and Android: you can photograph and verify on the spot, without needing a computer.
No detector, ours included, is legal proof: anyone promising absolute certainty is selling you something. Every change to our engine goes through a repeatable test bench of 10,179 tests, with a category dedicated to real photos worked on in post-production — the case where almost every tool gets it wrong.