GPTZero vs UncovAI AI Detector Extension

GPTZero identifies likely AI-generated writing and highlights detected AI use at document, sentence, and word level. Its detector can classify text as human, AI, or mixed, and provides confidence scores, explanations, AI vocabulary, and sentence-by-sentence highlighting. Advanced Scan points to passages contributing most to an AI classification. Users can submit pasted text or DOCX, PDF, and image files; the technology page says it can analyze up to 50 files at a time. GPTZero lists support for English, German, Portuguese, French, and Spanish, and detector coverage for text from ChatGPT, GPT-3 through GPT-6, Gemini, Claude, Copilot, and other models. Additional tools include Writing Replay, plagiarism checking, writing feedback, and grammar checking. The Chrome extension scans webpages and Google Docs, and integrations include Google Classroom, Canvas, an API, and Zapier. GPTZero says its results may be wrong, perform better on longer English prose, and should not be used alone to punish students. The free plan costs nothing. Paid plans start at $8.33 a month when billed annually.

UncovAI AI Detector Extension checks text, images, and links on web pages for AI-generated content, manipulated images, and phishing risks. Users can scan an item with one click and see the result in the browser without leaving the page. The extension is available for Google Chrome and Mozilla Firefox, with the same core detection features in both. UncovAI describes its text detector as distinguishing human writing from text generated by models such as ChatGPT or Gemini. Image checks are intended to identify generative AI and deepfake or manipulated images; link scans flag dangerous or scam sites before a click. Checks are on demand, and UncovAI says it does not continuously log browsing activity. Its privacy policy says it may collect account, contact, transaction, device, usage, and location data, and may share personal information with service providers where needed. Plans include Freebie at €0/Month, Plus at €9.99/Month, and Pro at €19.99/month after the first month free. Zoom and Teams audio detection and WhatsApp and Telegram scam or deepfake detection are also offered.