GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. OPIC records 1,317 monthly visits with -61.6% growth and Free Trial pricing.
AI detection and writing verification built for schools and editors
Event photo sharing where guests find themselves with a selfie
| Dimension / Metric | ||
|---|---|---|
| Official Domain | gptzero.me | opic.ai |
| Pricing Model | Freemium, Paid | Free Trial |
| Monthly Visits | 23.25M (23,246,989) | 1.32K (1,317) |
| MoM Traffic Delta | +5.7M (+32.5%) | -2.12K (-61.6%) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🇹🇷 Türkiye (61.3%) |
| Direct Visits / mo | 7.53M | 543 |
| User Rating | 4.1 | 4 |
| 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.
Event photo sharing where guests find themselves with a selfie
Guests upload a selfie and instantly receive every photo they appear in, no manual album browsing.
Set Guest, Full Access, Photo Selection, and VIP levels so each audience sees only what you intend.
Share events with pre-built themes using QR codes, links, or direct social posts.
Track guest visits, photo views, and downloads, and receive alerts by WhatsApp and 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.
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 culling, editing and retouching that gives photographers their time back
AI culling, editing and retouching that gives photographers their time back
AI detector that highlights evidence, not just a score
AI detector that highlights evidence, not just a score
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.
SpecialistHumanize AI text and check it against AI detectors
SpecialistHumanize AI text and check it against AI detectors
SpecialistCheck plagiarism, detect AI text and polish your writing in one place
SpecialistCheck plagiarism, detect AI text and polish your writing in one place
