Originality.ai vs SlopProx

Originality.ai provides tools for checking AI-generated text, plagiarism, facts, readability, grammar, spelling and content quality. Its free Basic plan costs $0.00 per free and provides three AI scans per day, with up to 2,000 words per scan. The AI detector offers configurable allowances of 0%, 5%, 15%, 25% or 40%. A website scanner can crawl a site, identify pages likely to contain AI-generated content and run scheduled scans. The browser extension scans Google Docs, web pages or selected text, and includes writing replay, typing behavior insights and shareable reports. A REST-based API submits text for AI and plagiarism scans and returns detailed results; the maker says AI detection supports 30 languages. API AI scans require at least 50 words, and the help page says accuracy decreases below 100 words. Originality.ai describes detection results as probabilistic estimates that may produce false positives or false negatives, not conclusive proof. Pro costs $12.95 per month billed yearly, with a monthly option at $14.95 per month. The service is available through web, API and extension.

SlopProx is a Windows desktop app plus Chrome and Firefox extensions that detect and hide AI-generated text, images, and YouTube videos while browsing. Text analysis combines more than 76 curated phrases and structural signals with an on-device ONNX transformer. Image checks use three ONNX vision models and inspect C2PA manifests, EXIF data, and PNG metadata. The YouTube filter checks an AI disclosure before the player renders, then can overlay videos or dim feed and search cards. Optional Enhanced Mode uses a local HTTPS proxy to block 29 listed ad networks and installs a local certificate without administrator rights. The maker says all processing stays on the device, with no cloud calls, telemetry, or data leaving the machine. Integrations include email, Google Docs, and CMS workflows through the extension. The project is GPL-3.0 open source. Open Source costs nothing. Individual Pro is listed at £49 a year, and Teams at £10 a month, billed annually per seat with a five-seat minimum. Pro is marked coming soon.