OpenAI image checks

ChatGPT Image Detector for OpenAI and GPT Images

Checking a picture that may have come from ChatGPT, DALL-E, Codex, or the OpenAI API? This is a ChatGPT SynthID checker: Slop or Not reads OpenAI's SynthID watermark and C2PA Content Credentials first, then scores the pixels with a classifier trained on millions of human and AI images when the proof was stripped. Online checks stay away from outside AI companies.

A SynthID checker finds stamped images. Slop or Not also checks the ones nobody stamped.

It reads SynthID from Google and OpenAI images, verifies C2PA Content Credentials, reads generator fingerprints, and scans the pixels.

You can testPhotos, screenshots, product images, receipts, and profile pictures up to 8 MB.
ResultA probability verdict, AI score, and source details when the file carries them.
PrivacyChecked on hardware we own and run. We never pass your photo to OpenAI, Google, or any other AI company.

What it checks

Check OpenAI Provenance First, Then the Pixels

OpenAI C2PA Content Credentials when they survived export

OpenAI SynthID watermark signals when the image still exposes them

Visual generator artifacts after social apps strip metadata

Good Uses

Checking a ChatGPT image from a download folder
Verifying a blog or newsletter image before publishing
Testing a file after it has moved through chat or social apps

Limits to Know

OpenAI Verify is scoped to OpenAI provenance signals, not Gemini or every other generator
Screenshots usually remove C2PA/IPTC metadata and can reduce the strongest provenance evidence
A clean metadata read does not prove the pixels are human-made

FAQ

ChatGPT Image Detector Questions

Does ChatGPT add metadata to generated images?

OpenAI says images generated with ChatGPT, Codex, and the OpenAI API include both C2PA metadata and SynthID watermarks. Slop or Not checks those signals when the image still exposes them.

What happens if the metadata is gone?

Slop or Not checks for remaining watermark evidence, then falls back to visual image detection and reports a probability. A missing credential is weaker evidence, not proof that the image is real.

When should I use the broader AI image detector?

Use the ChatGPT image detector when OpenAI is the suspected source. Use the broader AI image detector when the generator is unknown or the image has passed through several apps.

Can ChatGPT detect AI images?

Not reliably. ChatGPT can describe an image, but it does not run provenance checks, and its guesses about AI origin are inconsistent. Slop or Not reads OpenAI C2PA Content Credentials and SynthID watermark signals first, then checks the pixels.

Can ChatGPT see or look at images?

Yes. You can attach images and ChatGPT will describe or analyze them. Seeing an image is not the same as verifying it: for a repeatable AI-or-not verdict, run the file through this detector, which checks provenance metadata and watermarks before judging the pixels.

Is this a ChatGPT SynthID checker?

Yes. OpenAI writes a SynthID watermark into the images ChatGPT generates, and Slop or Not reads it, alongside OpenAI's C2PA Content Credentials. It reads SynthID from Google's image models too, so the same check covers both providers. A detected mark can tell you which provider's watermark is present, never what the mark says.

Run the Next Check on Your iPhone or Mac

The Slop or Not app checks images and text on-device, so nothing you check ever leaves your device.

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