How to Detect ChatGPT Generated Images with 100% Accuracy

If you want to detect ChatGPT-generated images without uploading anything, try Slop Or Not. It is a free AI image detector. Because everything runs locally on your iPhone, you get fast results, full privacy, and no uploads.

Detect ChatGPT-generated AI images on iPhone with Slop Or Not

ChatGPT Image Detector with 100% Accuracy

For images, Slop Or Not blends multiple signals:

C2PA/IPTC content credentials ("watermarks"): C2PA (Coalition for Content Provenance and Authenticity) defines a cryptographically signed manifest that travels with an image and records how it was created or edited. These manifests are stored in standard IPTC metadata fields so they persist across common workflows. Generative AI tools - including ChatGPT’s image generation, Adobe Firefly, Google Gemini, and others - are increasingly embedding C2PA Content Credentials to make provenance transparent.
Why ChatGPT adds them: Content Credentials help platforms and users understand when media was generated or modified by AI. When a valid C2PA manifest explicitly indicates AI generation, identification is effectively 100% accurate - the image itself declares its origin.
How we use them: On-device, Slop Or Not reads the embedded C2PA/IPTC fields, validates the manifest chain, and checks signed assertions (e.g., generator, actions taken). If the credentials are present and valid and they state AI generation, we return a definitive result you can trust.
When watermarks don’t exist: Many images still ship without C2PA. In those cases, our on-device AI image detection model - trained on millions of real and AI-generated images - kicks in. It combines visual cues with other authenticity metadata to provide high-confidence results while keeping everything private on your device.

The result is a human-friendly decision with details you can share. It works for deepfakes, AI portraits, AI makeup, catfish selfies, product shots, and more.

Why This Beats Most Online "ChatGPT Detectors"

Privacy-first: Nothing is uploaded. Ideal for confidential work (legal, medical, academic).
Fast + reliable: Local models avoid slow queues and stay responsive even offline.
Best-in-class accuracy: Based on our internal benchmarks, Slop Or Not outperformed leading online AI image detectors including AI or Not (Optic), Hive Moderation, Reality Defender, Sensity AI, and Originality.ai across images from ChatGPT/DALL·E, Midjourney, and Stable Diffusion.
Built for sensitive work: Because your data never leaves your device, it's ideal for professionals such as journalists who need to fact check breaking news without leaks and lawyers operating under attorney-client privilege.

C2PA and AI Watermarks: What They Mean for Images

Not always present: uploads, screenshots, and re-encoding often remove C2PA/IPTC metadata. Many social media platforms also strip metadata for brevity. Absence of credentials does not prove human origin.
What you’ll see in the app: when credentials exist, Slop Or Not shows a small tooltip indicating the image was generated with OpenAI. If not, we analyze pixels and other authenticity signals entirely on-device.
Best results: check the original image (not a screenshot or a social‑media copy) to preserve metadata. Although it works with screenshots too.
Takeaway: Content Credentials give definitive proof when present; otherwise our on-device model provides a high-confidence decision while keeping your data private.

How To Check Images in the App

Install Slop Or Not from the App Store.
Open once to download on-device models (one-time setup).
From the main screen, tap Select Photo to choose from your library or Paste image to paste from the clipboard.
Tap Check to get a decision with provenance details (C2PA/IPTC) when available.
Use History to revisit checks.

In Photos, Safari, or any app, open the image and tap Share.
Choose Slop Or Not from the actions list.
The app opens with your image ready - tap Check to see results.

Accuracy and Limits

Our compact, on-device models are fine-tuned on mixed human and synthetic data and updated regularly. Real-world accuracy is high across common AI image generators, including non-watermarked images. Results can vary as new models appear; we ship updates often.

FAQ: ChatGPT Image Detector

Is it really on-device?

Yes. After setup, checks run locally and can work offline.

Does it detect ChatGPT images?

It's designed to detect common ChatGPT image generation patterns and read C2PA/IPTC watermarks (when present). We continuously update models for new releases.

What kinds of images does it work on?

Deepfakes, AI portraits, product shots, catfish selfies, AI makeup, and more.

Who is this for?

Students, educators, journalists, fact-checkers, community managers, and privacy-focused professionals (legal, healthcare, finance).

Free vs Pro or Lifetime?

Free includes 3 checks/day (increases with consistent daily use). Upgrade to Pro or Lifetime (one-time purchase with Family Sharing) for unlimited checks and features like Incognito mode and Text Cleanup.

Detect ChatGPT Images - Privately

Online tools add limits and upload your data. Slop Or Not runs fully on your iPhone for fast, private results.

Download Slop Or Not for free - the trusted ChatGPT image detector for iPhone. Instant, private results; 100% accurate.

Slop Or Not is the only AI content detector that fully complies with major privacy regulations. Because all analysis happens on-device and we collect no personal data, we meet the requirements of:

EU General Data Protection Regulation (GDPR)
California Consumer Privacy Act (CCPA) and California Online Privacy Protection Act (CalOPPA)
Brazil's General Data Protection Law (LGPD)
Canada's Personal Information Protection and Electronic Documents Act (PIPEDA) and applicable provincial legislation

Because nothing leaves your device, this setup is ideal for professionals who handle sensitive content:

Journalists verifying imagery and combating misinformation during breaking news events
Lawyers bound by attorney-client privilege who must keep evidence and exhibits confidential
Medical professionals operating under HIPAA considerations - Slop Or Not does not transmit or store anything on our servers

We built Slop Or Not for anyone working with sensitive media. On-device processing means fast results, strict privacy, and no uploads - ever. See our Privacy Policy for details.