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 Detector
Winston AI vs Originality.ai: AI Detector (2026)
Winston AI bundles an AI-image and deepfake detector with its text checks, useful the moment a submission is more than words — but that bundle only runs free for 14 days and 2,000 credits. Originality.ai stays text-only and never times out; it just meters every scan against a credit balance instead.
Winston AI and Originality.ai both check AI text and plagiarism, but they differ in scope and pricing. Winston AI pairs text detection with writing feedback, shareable reports, and an AI image and deepfake detector, starting with a 14-day trial of 2,000 credits. Originality.ai is a pay-as-you-go platform at one credit per 100 words, and it publishes third-party validation studies for its accuracy figures. Slop or Not runs text and image checks on iPhone and Mac on-device without credits or a trial period.
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 | Winston AI | Originality.ai |
|---|---|---|---|
| Best fit | On-device iPhone and Mac checks or free browser checks for text and images | AI text detection with plagiarism, reports, writing feedback, and education use cases | Content QA for writers, publishers, agencies, and education users |
| Text detection | Checks writing in the native app and online checker | AI detector for ChatGPT, Gemini, Claude, and other tools | AI Checker for AI writing and paraphrased text |
| Image detection | Checks photos, synthetic images, and provenance clues in the app or online checker | AI image detector is listed as a product | No |
| Deepfake detection | Covers deepfake and synthetic-image checks as image detection | AI image detector is described for images and deepfakes | No |
| Metadata and provenance signals | Reads SynthID, C2PA, and IPTC signals in native and online image checks when a file carries them | Not publicly clear | Not publicly clear |
| 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 | Sentence-level precision and shareable reports are listed | Sentence-level highlighting, reports, scan history, and writing replay are listed |
| Browser checker | Free online checker runs in any browser on Numen's private Mac server; submissions are deleted after processing | Public lite web checker shows a 2,000 character limit | Chrome Extension and Google Docs workflow are listed |
| 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 | AI content detection API and AI image detection API are listed | API access is listed for Enterprise and API integrations |
| Classroom workflow | Useful for checking student writing on-device in the app or through deleted-after-processing online checks | Google Classroom integration and education solutions are listed | Education customers and Moodle plugin are listed |
| 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. | 14-day free trial with 2,000 credits, no card. Paid plans after that. | Pay-as-you-go credits; one credit covers ~100 words. No free tier. |
| 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. | Lists SOC 2 certification and GDPR compliance | Lists encryption, data-not-used-in-training controls, and one-click scan-history deletion |
| Main limitation | On-device privacy requires iPhone or Mac; browser checks run on Numen's private Mac server, not on-device | Lite checker is English-only and capped at 2,000 characters before sign-up | Built around text and content QA, not image forensics |
✓ = supported, ✕ = not offered, – = not publicly documented. Details reviewed June 2026 from public product, pricing, documentation, and benchmark pages.
Where Slop or Not Fits
One rival's free access expires in 14 days; the other never had a free tier to expire. Slop or Not's daily free checks just reset, and image detection already lives in the same app instead of a separate credit line.
- 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.
Winston AI
Use it for educators and publishers that want reports, plagiarism checks, and text feedback.
Originality.ai
Use it for publishers and agencies that need text QA at volume.
Related Comparisons
Keep comparing adjacent tools before you pick a workflow.
Slop or Not vs Originality.ai
Originality.ai tracks every scan in a dashboard built for agencies, but there's no free tier — every check burns a credit at roughly 100 words apiece.
Slop or Not vs Winston AI
Winston AI bundles plagiarism checks and writing feedback with its AI verdict, but the free lite checker stops at 2,000 characters and the real trial runs out in 14 days.
GPTZero vs Originality.ai
GPTZero fits a teacher's free plan; Originality.ai fits a publisher's paid credit meter.
Originality.ai vs Copyleaks
Originality.ai bills per credit for solo writers; Copyleaks bills enterprise accounts for LMS-wide integrity checks.
Winston AI vs GPTZero
Winston AI sells trial-based reports; GPTZero gives away classroom integration for free.
Slop or Not vs GPTZero
GPTZero lives in Canvas and Google Docs and never leaves the browser — and it never checks an image, despite the 'AI Vision' name.
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.
