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Google says 180 billion images and videos now carry SynthID watermarks as detector goes public

Google releases SynthID watermark detector, letting anyone verify AI‑generated content. The tool scans images, videos, and audio for the proprietary watermark that Google and partners like OpenAI and Nvidia embed. With over 180 billion items already watermarked, the detector only flags SynthID‑tagged media, not all AI‑generated content, so developers must use additional methods for broader detection.

The Decoder·Oct 7, 2026

Opening Kapyn…