[postalcoder]

Google's SynthID is embedded into the content itself. Google open sourced their SynthID for text.

Repo: https://github.com/google-deepmind/synthid-text

Paper: https://www.nature.com/articles/s41586-024-08025-4

With images and video, it's less clear exactly what they're doing, but it's watermarking on the pixel leve. From one of their blog posts:

  Videos are composed of individual frames or still images. So we developed a watermarking technique inspired by our SynthID for image tool. This technique embeds a watermark directly into the pixels of every video frame, making it imperceptible to the human eye, but detectable for identification.

https://deepmind.google/discover/blog/watermarking-ai-genera...

Elevenlab's audio watermarking is trivial to shake off with compression, but google claims that synthid is resilient to such manipulation.

[pogue]

Has anyone identified the SynthID in an image or is there a tool that will determine images are AI generated by checking if it's there?

[postalcoder]

synthid used to be a waitlist-only tool but you can now check to see if images are made by imagen in google’s cloud console. You have to have a Vertex billing account to use it.

https://console.cloud.google.com/vertex-ai/studio/media/gene...