Slop or Not
Use it for people who want native Apple checks or the free online checker for text, images, and provenance clues.
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AI Image Detector
AI or Not vs Sightengine: AI Image Detector (2026)
AI or Not covers more ground: text, images, audio, video, and deepfakes behind one key, which matters the moment a product needs to check more than pictures. Sightengine stays image-only, but its free tier never expires, and its C2PA and EXIF metadata tools go deeper than AI or Not's broader, shallower sweep.
AI or Not covers text, images, audio, video, and music detection through a single API key; the free plan includes 20 AI image checks and 1 million words of text detection per month. Sightengine is image-only: it detects AI-generated images and deepfakes and includes a C2PA checker and EXIF metadata viewer, but it has no AI text detection. Its permanent free tier covers 2,000 operations per month. Slop or Not handles text and image checks on iPhone and Mac on-device.
Privacy, Pricing, and Workflow Matrix
Public product, pricing, documentation, and benchmark pages can change. Source links are listed below the table so the cells stay readable.
| Feature | Slop or Not | AI or Not | Sightengine |
|---|---|---|---|
| Best fit | On-device iPhone and Mac checks or free browser checks for text and images | Developers who need API detection for several media types | Developers adding AI media detection and moderation through an API |
| Text detection | Checks writing in the native app and online checker | Text detection is listed with image, music, video, and deepfake checks | No Sightengine is image-only; it doesn't detect AI-generated text |
| Image detection | Checks photos, synthetic images, and provenance clues in the app or online checker | Image detection is listed and the upload demo supports image formats | AI Image Detection is listed for detecting AI-generated images |
| Deepfake detection | Covers deepfake and synthetic-image checks as image detection | Deepfake detection is listed for API and product pages | Deepfake Detection is listed for face swaps and AI manipulation |
| Metadata and provenance signals | Reads SynthID, C2PA, and IPTC signals in native and online image checks when a file carries them | Not publicly clear | C2PA Checker and EXIF & Metadata Viewer are listed |
| Manual forensic tools | Reports detector and provenance evidence in native and online checks; not a manual forensic editor | No | No |
| Evidence level | Probability verdict plus provenance signals, with internal-test caveats instead of 99.9% certainty claims | Demo shows AI and deepfake percentage outputs and data breakdown | API model capabilities and operation counts are documented |
| Browser checker | Free online checker runs in any browser on Numen's private Mac server; submissions are deleted after processing | Web upload demo is shown | Not publicly clear |
| Native Apple app | Native iPhone and Mac app for on-device checks; browser users can use the free online checker | No | No |
| API workflow | Pro Mac app includes a local CLI and MCP server; no public hosted API | API key is included on the free plan | API documentation and API keys are listed |
| Classroom workflow | Useful for checking student writing on-device in the app or through deleted-after-processing online checks | Not publicly clear | Not publicly clear |
| Free tier & limits | Free daily checks in the iPhone and Mac app and a free online checker in any browser. Pro removes the native daily cap; the native app has no per-document word cap. | Free credits to start, 1M words/month of text detection, and a capped number of free image checks per month. | Free tier lists 2,000 operations per month with a 500 per day maximum |
| Privacy | Native checks stay on the iPhone or Mac and never send submitted text or images to a third-party AI provider. Online checks run on Numen's own Apple hardware, and submissions are deleted after processing. | Its public privacy policy covers account, contact, and payment data; it does not specifically describe how images or text submitted for detection are collected or retained | Its policy covers subscriber-submitted data sent to the API for analysis, and its security page says Enterprise customers can request immediate deletion after processing; the default retention period on other plans is not stated |
| Main limitation | On-device privacy requires iPhone or Mac; browser checks run on Numen's private Mac server, not on-device | Credit model for multimodal API use; free image checks are capped | API-first tool; paid plans meter operations |
✓ = supported, ✕ = not offered, – = not publicly documented. Details reviewed June 2026 from public product, pricing, documentation, and benchmark pages.
Where Slop or Not Fits
AI or Not's wider reach comes with a monthly credit ceiling, and Sightengine never reads a word of text at all. Slop or Not checks text and still images together, free, with limited daily checks and no per-document word cap.
- Slop or Not runs its own detection models, so no third-party AI provider sees your text or images. Native checks run on the Apple Neural Engine; online checks run on Numen's self-hosted Apple hardware, and submissions are deleted after processing.
- Free daily checks in the iPhone and Mac app and in the free online checker. Pro removes the daily cap, and native checks have no per-document word cap.
How They Compare by Workflow
Slop or Not is not the right answer for every workflow — pick the tool whose strongest workflow matches the check you need to run.
AI or Not
Use it for developers who need multimodal AI detection behind an API key.
Sightengine
Use it for developers adding visual moderation and AI media checks to an app.
Related Comparisons
Keep comparing adjacent tools before you pick a workflow.
Slop or Not vs AI or Not
AI or Not covers text, images, audio, video, and deepfakes behind one key, but every check outside the free credits draws down a balance a developer has to track.
Slop or Not vs Sightengine
Sightengine reads C2PA and EXIF metadata alongside its AI-image and deepfake detection, but it's API-only, capped at 2,000 free operations a month, and it never checks text.
AI or Not vs Hive Moderation
AI or Not opens free with no card required; Hive Moderation gates its free credits behind one.
Sightengine vs Reality Defender
Sightengine is a self-serve image API with a permanent free plan; Reality Defender adds audio and video behind a sales-gated ceiling.
Hive Moderation vs Sightengine
Sightengine offers a card-free permanent free tier; Hive Moderation gates its credits behind a payment method.
Slop or Not vs Hive Moderation
Hive Moderation covers image, video, text, and audio detection for trust-and-safety pipelines, but the free credits don't unlock until a payment method is on file.
Privacy tools from the same team
More From Numen
AI can now fake a profile photo or wrap a scam in a link that looks safe to tap. Numen builds the apps that put you back in charge: spot AI-generated text and images with Slop or Not, run the best open-source models uncensored and private with Private LLM, and strip trackers from links and QR codes before they follow you with Clean Links.
One belief runs through all three: your data belongs to you, and no one else.
