We’re Making It Easier To Identify AI-generated Content Globally.

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Google says its SynthID Detector is now available to everyone worldwide in English. The tool can identify SynthID watermarks in images, video and audio from Google and participating partners, but it does not establish whether all AI-generated media is detectable.

Google has opened its SynthID Detector to everyone worldwide in English, expanding a tool that checks images, video and audio for watermarks linked to AI systems from Google and participating partners. The company says the release is intended to give people more context about media they encounter online, though the detector’s results apply to content carrying supported watermarks.

Google said users can submit an image, video or audio file to check whether it contains a SynthID watermark. The company says the tool can identify content made with AI from Google or its partners, naming OpenAI, NVIDIA and Kakao; Apple is expected to join later, according to Google. The announcement does not specify when Apple support will be added.

Google said it has watermarked more than 180 billion images and videos and an amount of audio equivalent to 240,000 years since SynthID launched in 2023. Those figures are company-reported totals; the announcement does not provide a date range beyond the period since launch or an independent audit of the counts.

The public detector follows an early version introduced last year for media professionals, Google said. The company also pointed to verification features in Search, the Gemini app and Chrome, which it said now handle more than one million requests daily. Google did not break down those requests by product or explain what kinds of checks they represent.

A Wider Route to Check AI Media

Making the detector publicly available lowers the access barrier for people who want to check whether a file contains a watermark associated with supported AI tools. That could give journalists, publishers and everyday users another source of information when evaluating media, particularly where images or recordings are shared without clear provenance.

The tool’s stated scope is also a limit: it checks for SynthID signals, rather than determining whether any given file was made with AI by any method. A result that does not identify a supported watermark cannot, on the information Google provided, establish that media is human-made. The announcement gives no accuracy figures or details about performance on edited, compressed or otherwise altered files.

SynthID’s Expansion Since 2023

Google introduced SynthID in 2023 as a way to mark AI-generated media with watermarks designed to be imperceptible to people. The company says its system covers images, video and audio. The public-facing detector is a separate step: it lets users check files for those signals rather than relying only on labels or information supplied alongside a post.

Last year, Google released an early detector version for media professionals. The current announcement expands access beyond that group and describes partner coverage beyond Google’s own systems. Google’s existing verification features in Search, Gemini and Chrome form a further part of its approach, but the company has not provided a comparison of how those features work or how they relate to the new detector.

““With the new SynthID Detector, anyone can easily check if an image, video, or audio file was made with AI from Google or our partners.””

— Google

Limits of Watermark Detection

Google’s announcement does not say how the detector performs across different file formats, edits or levels of compression, and it provides no false-positive or false-negative rates. It is also unclear which specific partner models and media-generation tools are supported at launch, beyond the named organizations.

The company has not said when Apple support will arrive, what languages may be added after English, or whether the detector will identify AI-generated media that lacks a SynthID watermark. As described, the tool checks for supported watermarks; it should not be treated as a universal test for whether content was generated by AI.

Partner and Language Expansion

Google says SynthID Detector is available globally in English starting with this release. The company says Apple support is coming, but has not announced a date or further implementation details. It also has not set out a timetable for additional languages or named other planned partners.

For now, users can submit supported image, video and audio files to check for watermarks tied to Google and the listed partners. Further information about compatibility, accuracy and the timing of planned additions will be needed to show how widely the detector works in everyday use.

Key Questions

What does Google’s SynthID Detector do?

It checks submitted images, video and audio for SynthID watermarks associated with AI content from Google and participating partners.

Who can use the detector?

Google says it is now available to everyone globally in English, after an earlier version aimed at media professionals.

Which companies’ content can it check?

Google named Google, OpenAI, NVIDIA and Kakao. It said Apple support is planned, without giving a launch date.

Does a negative result prove that media is not AI-generated?

No. The announcement describes a check for supported SynthID watermarks; it does not say the detector can identify every form of AI-generated content.

How widely has SynthID been used, according to Google?

Google reports watermarking more than 180 billion images and videos and 240,000 years’ worth of audio since SynthID launched in 2023. Those are figures supplied by the company.

Source: rss