GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. Protime records 1,279 monthly visits with -46.6% growth and Free Trial, Paid pricing.
AI detection and writing verification built for schools and editors
An email assistant that also checks your business partners
| Dimension / Metric | ||
|---|---|---|
| Official Domain | gptzero.me | protime.ai |
| Pricing Model | Freemium, Paid | Free Trial, Paid |
| Monthly Visits | 23.25M (23,246,989) | 1.28K (1,279) |
| MoM Traffic Delta | +5.7M (+32.5%) | -1.11K (-46.6%) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🇨🇭 Switzerland (100%) |
| Direct Visits / mo | 7.53M | 519 |
| User Rating | 4.1 | 4.1 |
| Supported Platforms | Website | Website |
AI detection and writing verification built for schools and editors
Paste text or upload a document and get an overall AI probability score plus a sentence-by-sentence breakdown of which parts look machine-written.
Flags AI text from major model families including ChatGPT, Gemini, Claude, Llama, and others, rather than training for a single model.
A Chrome extension and Google Docs add-on bring scanning into Gmail, Docs, Classroom, and other surfaces you already work in.
Checks content for copied passages from outside sources so you can separate AI-generation questions from originality questions.
An email assistant that also checks your business partners
Every working day, Protime checks the companies in your correspondence against the Swiss commercial register and reports bankruptcies, debt moratoriums, calls to creditors and lost signing authority, with the official publication as proof.
Replies are prepared as drafts inside your mailbox, never sent automatically. It also inserts internal warning notes when a partner company looks troubled or new bank details appear.
Newsletters, cold outreach and FYI-only mail are filed into their own folders so what stays in the inbox is what actually needs an answer.
A daily digest of news relevant to your industry and contacts, plus proposed meetings pencilled into your calendar and tasks pulled from your email.
Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features.
Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features.
SpecialistCombines AI detection with professional human proofreading and citation tools, but functions primarily as an editing service.
SpecialistCombines AI detection with professional human proofreading and citation tools, but functions primarily as an editing service.
The AI productivity suite with agents, email, and docs that work wherever you do
The AI productivity suite with agents, email, and docs that work wherever you do
SpecialistCombines AI detection with robust text humanization tools, but focuses more heavily on rewriting than pure verification.
SpecialistCombines AI detection with robust text humanization tools, but focuses more heavily on rewriting than pure verification.
Provides robust enterprise-grade content integrity and cross-media detection, but can be more expensive for individual users.
Provides robust enterprise-grade content integrity and cross-media detection, but can be more expensive for individual users.
Delivers strong fact-checking and comprehensive site-wide plagiarism audits, but has stricter paywalls than GPTZero.
Delivers strong fact-checking and comprehensive site-wide plagiarism audits, but has stricter paywalls than GPTZero.
Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition.
Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition.
Excels at scanning both text and images with high accuracy, but offers fewer free daily checks than GPTZero.
Excels at scanning both text and images with high accuracy, but offers fewer free daily checks than GPTZero.
AI detector that highlights evidence, not just a score
AI detector that highlights evidence, not just a score
Smart, focused email with AI help — for individuals and teams
SpecialistTailors detection specifically for academic institutions and LMS integrations, but is less optimized for casual web users.
SpecialistTailors detection specifically for academic institutions and LMS integrations, but is less optimized for casual web users.
A privacy-first email client with built-in AI writing help
