Google opens SynthID AI-content detector to the public, covering watermarks from Google and partners
Overview
Google has opened its SynthID Detector to anyone at SynthID.com, letting users upload or paste an image, video, or audio file to check for a SynthID watermark from Google or partners OpenAI, NVIDIA, and Kakao, with Apple support coming soon.
Users must sign in with a Google, Apple, or OpenAI account, and Google says uploaded files are deleted right after scanning, a claim a Google Chrome-linked poster on X made. Google says SynthID has watermarked over 180 billion images and videos.
The tool only detects SynthID watermarks, so it misses AI content without them, such as output from Anthropic's Claude, xAI's Grok, and open-weights Chinese models. SiliconANGLE reports it cannot identify which parts of edited content are AI-made. Gizmodo's tests found Gemini and Grok gave inaccurate or unsupported answers about AI images and advises against treating results as definitive, while Ars Technica notes it did not independently verify how completely the detector finds watermarked content.
Written by AI from the articles below · updated Oct 9, 8:27 AM ET
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Developments
5 developments
- Oct 8, 10:53 AM ET · 1 articleSynthID Detector is now publicly available, supporting Nano Banana 2.1, OpenAI, NVIDIA, Kakao, and soon ApplePhilipp Schmid: SynthID Detector now publicly available for verifying AI-generated content
- Oct 7, 1:14 PM ET · 1 articleSynthID Detector made available to everyoneNVIDIA AI: NVIDIA Cosmos content can now be checked with SynthID Detector
- Oct 7, 10:12 AM ET · 1 articleGoogle announces SynthID Detector platform for verifying AI-generated mediaGoogle: Google's SynthID has watermarked over 180 billion images and videos
- Oct 7, 10:12 AM ET · 1 articleGoogle tells users how to check AI-made media with SynthID portalGoogle: Google's SynthID portal checks if media was made with AI
- Oct 7, 10:00 AM ET · 9 articlesGoogle's SynthID detector now supports all partners' watermarks and is available globally on SynthID.comGoogle DeepMind · The Keyword: Google expands SynthID Detector globally to check AI-generated media
Article timeline
The articles in this story. Times are ET.
Google AI@GoogleAIGoogle AI lists its week's announcements, from SynthID availability to Gemini Live guided visionAIGoogle AI announces that SynthID.com is now available globally in English for verifying AI-generated images, video, and audio. The post also lists Nano Banana 2.1, EmbeddingGemma 2, Gemma 4 with BOTANIC-1, a Gemini business agent, and Guided Vision in Gemini Live.
Philipp Schmid@_philschmidSynthID Detector now publicly available for verifying AI-generated contentAIGoogle's SynthID Detector is now publicly available, letting users check whether an image, video, or audio file was generated by supported tools. Per the post, it scans for watermarks from Google and partners, including Nano Banana 2.1, OpenAI, NVIDIA, and Kakao, with Apple support coming soon. Uploaded files are deleted right after scanning.

- SiliconANGLE · AIGoogle opens SynthID Detector to all users for flagging AI-generated images, video and audio
AIGoogle has launched SynthID Detector, a web-based tool anyone can use, after signing in with a Google, OpenAI or Apple account, to identify AI-generated images, video and audio. It detects content made with models from Google, OpenAI, Nvidia and Kakao that carries the SynthID watermark, and Apple Image Playground support is due within weeks. The tool misses content without a SynthID watermark, such as output from Anthropic's Claude, xAI's Grok and open-weights Chinese models, and it cannot tell which parts of edited content are AI-made.
MacRumors.com@MacRumorsGoogle opens SynthID AI Detector to everyone for checking AI-generated contentAIGoogle has made its SynthID AI Detector available to the public, according to a MacRumors article linked in the post. The tool checks whether content carries SynthID, Google's watermark for identifying AI-generated images, audio, video, and text. The post provides no further details on pricing, supported formats, or accuracy.

- Gizmodo · AIGoogle Launches SynthID.com to Check Images and Videos for AI Watermarks
AIGoogle launched SynthID.com, letting users upload an image or video to check whether it was made with AI. The tool detects only content created with tools from Google, OpenAI, Nvidia, and Kakao, and it requires signing in with a Google, Apple, or ChatGPT account. Gizmodo's tests found Gemini and Grok gave inaccurate or unsupported answers about AI-generated images, so the results should not be treated as definitive.
NVIDIA AI@NVIDIAAINVIDIA Cosmos content can now be checked with SynthID DetectorAISynthID Detector is now publicly available, letting anyone check whether content is SynthID-watermarked. NVIDIA watermarks content generated by its Cosmos models on build.nvidia.com, so uploaded Cosmos output can be verified as coming from NVIDIA's models.
Google AI@GoogleAIGoogle opens public SynthID portal for checking AI-generated images, video and audioAIGoogle is letting anyone check files for SynthID watermarks at synthid.com, covering content from Google and partners including OpenAI, NVIDIA and Kakao. Apple is listed as coming soon. Google says it has watermarked 180 billion images and videos and more than 240,000 years of audio, and the portal handles about 1 million verification requests daily.

Google@GoogleGoogle's SynthID has watermarked over 180 billion images and videosAIGoogle says it has watermarked more than 180 billion images and videos, plus 240,000 years of audio, since launching SynthID in 2023. The verification feature is built into Search, the Gemini app, and Chrome, which together handle over 1 million verification requests daily. Google presents the SynthID Detector platform as part of its effort to give users more context about online media.
Google@GoogleGoogle's SynthID portal checks if media was made with AIAIGoogle's SynthID portal at synthid.com lets users upload an image, video, or audio file to check it. The portal scans the file for a SynthID watermark from Google or its partners, which indicates AI generation.

Google@GoogleGoogle expands SynthID Detector with OpenAI, NVIDIA, Kakao, and AppleAIGoogle is expanding its SynthID Detector verification portal through partnerships with OpenAI, NVIDIA, Kakao, and soon Apple to improve transparency for AI-generated content. The portal is now available globally in English and lets users check whether media was made with AI.

Google DeepMind@GoogleDeepMindGoogle's SynthID Detector identifies AI watermarks in video, audio, and imagesAIGoogle DeepMind says SynthID Detector can quickly identify its SynthID watermarks in video, audio, and images, even after edits such as adding filters. The post adds that existing AI identification features in Google Chrome, Google Search, and the Gemini app can also be used.

Google DeepMind@GoogleDeepMindSynthID Detector opens to everyone for checking AI-generated contentAIGoogle DeepMind has made SynthID Detector publicly available, letting anyone check whether online content was generated using Google AI or tools from partners including OpenAI, NVIDIA, and Kakao. Apple is listed as coming soon. The tool is accessible at synthid.com.

- Ars Technica · AIGoogle's SynthID detector now checks watermarks from all partners, including ChatGPT images
AIGoogle says its SynthID detector now supports watermarks from all of its partners and is available to anyone on a new SynthID.com website. Previously, outside users could only check for Google's own watermarks by asking Gemini, and the detector did not flag images from other providers such as ChatGPT.
- Google DeepMind · The KeywordPickGoogle expands SynthID Detector globally to check AI-generated media
AIGoogle is making its SynthID Detector available globally in English, letting anyone check whether an image, video, or audio file was made with AI from Google or partners including OpenAI, NVIDIA, Kakao, and soon Apple. The tool joins built-in verification in Search, the Gemini app, and Chrome, which now handle over 1 million requests daily. Google says SynthID has watermarked over 180 billion images and videos and 240,000 years of audio.
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