SynthID Detector
Free web detector that checks images, video, and audio for SynthID watermarks from major AI labs.
Updated 2026-10-09
Yes. SynthID Detector is free to use.
Listed pricing: Free with Google, OpenAI, or Apple account login.
Overview
SynthID Detector is a public web tool that scans uploaded images, videos, or audio for SynthID watermarks — the imperceptible markers Google DeepMind designed so AI-generated or AI-edited media can be verified after the fact. You upload a file, sign in with a Google, OpenAI, or Apple account, and get a read on whether a supported model left a detectable watermark.
It is aimed at journalists, researchers, platform moderators, and anyone who needs a quick provenance check rather than a full forensic suite. Coverage currently spans supported models from Google, OpenAI, NVIDIA, and Kakao, with Apple expected next — a cross-vendor detector rather than a single-lab verifier.
What sets it apart is the shared SynthID standard plus sudden global public access (October 2026) after limited rollout. The flip side is hard: no watermark does not mean “human-made,” and media from unsupported tools or heavily re-encoded files can slip through. Treat it as strong evidence when positive, not as a complete authenticity oracle.
Is SynthID Detector free?
Yes. SynthID Detector is free to use.
What the free tier covers: Fully free; login with Google, OpenAI, or Apple account required.
Listed pricing: Free with Google, OpenAI, or Apple account login.
Pricing on this page has not been re-verified. The entry was last edited on , and no separate pricing check has been run since. Treat the figures as a record of what was published then and confirm on the official site.
SynthID Detector pricing
| Plan | Price | What's included |
|---|---|---|
| Free | $0 | Web detector for images, video, and audio; requires Google, OpenAI, or Apple account login |
Web detector for images, video, and audio; requires Google, OpenAI, or Apple account login
Pricing on this page has not been re-verified. The entry was last edited on , and no separate pricing check has been run since. Treat the figures as a record of what was published then and confirm on the official site.
Is SynthID Detector worth it?
You can test that on the free tier before paying anything. The recorded trade-offs are listed below, and any one of them can settle the question on its own.
The 8.2/10 AI Score is an editorial read of published capability, price and shipping pace. Nobody here has hands-on hours with SynthID Detector. How we verify.
Worth it if
The strengths recorded against this entry.
- Detects SynthID watermarks across images, video, and audio in one place
- Covers multiple AI labs (Google, OpenAI, NVIDIA, Kakao) under one standard
- Free public access after the October 2026 global launch
- Useful positive signal for provenance when a mark is present
Not worth it if
Any one of these blocks your use case.
- Absence of a watermark does not prove content is human-made or unedited
- Only works for models/formats that support SynthID; unsupported tools stay invisible
- Heavy re-encoding or transformations can weaken or remove detectable marks
- Requires third-party account login even though the tool itself is free
Key features
Multi-media scan
Accepts image, video, and audio uploads in one detector flow, so you do not need separate tools for each media type when checking for SynthID watermarks.
Cross-lab coverage
Looks for SynthID marks from supported Google, OpenAI, NVIDIA, and Kakao models, with Apple support expected — useful when the source lab is unknown.
Account-gated access
Free to use after signing in with a Google, OpenAI, or Apple account, which keeps the public detector available without a paid subscription.
Public web UI
Opened to global public use in October 2026 after limited access, making watermark checks available without special research-program enrollment.
How it compares
| Tool | Best for | Pricing | Score |
|---|---|---|---|
| SynthID Detector | — | Free with Google, OpenAI, or Apple account login | 8.2/10 |
| Perplexity AI | Knowledge workers and researchers who want cited, synthesized answers instead of a list of links to click through. | Freemium | 9.4/10 |
| NotebookLM | people who want cited answers and Studio outputs from a specific set of sources. | Free tier; Google AI Pro $19.99/mo | 9.1/10 |
| Inkling-Small | — | Free — open weights download; Tinker Playground access | 8.8/10 |
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