Can it detect Sora 2?

Our test set includes Sora clips, and the model flagged 97.5% of them across four quality levels. Sora 2 is newer, so treat any single result as evidence, not proof, and look at the reasons shown.

The Sora watermark was cropped. Can it still tell?

Yes, the video model doesn't rely on the watermark: it looks at how the picture moves and its texture over time. A cropped watermark only removes one clue.

Sora detector: was this video made with OpenAI's Sora?

Sora and Sora 2 make some of the most convincing AI videos, and the Sora app's clips spread fast once the watermark is cropped. Paste a link or upload the clip: our video model, the frame check, the voice check and a Content Credentials check look at it together.

How well we catch Sora

of 516 Sora test videos flagged as AI: 97.5%
called real by mistake: 0.8%
each clip tested as published, WhatsApp-quality, 360p and heavily compressed: 4×

If the file still carries Sora's signed Content Credentials, the result says so with the signer. Without them, the call rests on our video model, which flagged 97.5% of the Sora clips in our test, plus the frame and voice checks. Every AI tool's results (measured 2026-10-10).

Signs of a Sora video you can check yourself

A moving “Sora” watermark (the Sora app adds one; re-posts often crop or blur it).
Content Credentials (C2PA) in the original file, which OpenAI attaches to Sora videos; social platforms usually strip them, so an uploaded original is the best case.
Objects that merge, appear or vanish between cuts, text and signs that don't stay readable, and hands or fingers that change shape.
Motion that is a little too smooth: cameras that glide without shake, crowds that move in sync.

None of these proves anything on its own: real videos have odd moments too, and the best AI clips have none.

Questions

Can it detect Sora 2?: Our test set includes Sora clips, and the model flagged 97.5% of them across four quality levels. Sora 2 is newer, so treat any single result as evidence, not proof, and look at the reasons shown.
The Sora watermark was cropped. Can it still tell?: Yes, the video model doesn't rely on the watermark: it looks at how the picture moves and its texture over time. A cropped watermark only removes one clue.

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