Google opens the SynthID Detector to everyone
It reads Google, OpenAI, Nvidia, and Kakao watermarks, and Google says it is not a general AI detector.
By Justin Ryan · Published Oct 31, 2026 · Updated Nov 2, 2026 · CC BY 4.0
What happened
On October 7, 2026 Google opened its SynthID Detector to the public with a sign-in. It checks whether a file carries a SynthID watermark or one of the partner watermarks it now reads. Absence of a watermark proves nothing about origin, which is why provenance (C2PA) and labelling practices still carry the compliance weight.
Who it applies to
Anyone verifying inbound media; organizations building labelling and provenance procedures.
Dates
Primary sources
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