Google expands SynthID detector to check all partner AI content globally
Previously, users had to rely on Gemini for detection, which was cumbersome and limited to Google’s own watermarks. The new tool at [SynthID.com](https://synthid.com) supports watermarks from partners like OpenAI, Nvidia, Kakao, and soon Apple, though it only returns a yes/no result rather than detailed analysis.
Key points
- SynthID.com now detects watermarks from Google, OpenAI, Nvidia, Kakao, and Apple’s AI systems
- Tool returns only a yes/no result, unlike Google’s internal tool that highlights watermarked regions
- Google claims 180B images/videos and 240,000 years of audio from Gemini use SynthID
Google reports SynthID has been embedded in over 180 billion images and videos and 240,000 years of audio from its Gemini models alone. The update aims to simplify verification for users outside Google’s trusted program, though it lacks the granularity of internal tools.
Google rolls out improved SynthID AI content detector, now available globally
Ars Technica AI · 7 October 2026
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