GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. Link Shield records 497 monthly visits with +4,041.7% growth and Free Trial, Paid pricing.
AI detection and writing verification built for schools and editors
AI-assisted URL threat detection API for developers
| Dimension / Metric | | |
|---|---|---|
| Official Domain | gptzero.me | linkshieldapi.com |
| Pricing Model | Freemium, Paid | Free Trial, Paid |
| Monthly Visits | 23.25M (23,246,989) | 497 (497) |
| MoM Traffic Delta | +5.7M (+32.5%) | +485 (+4,041.7%) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🇮🇩 Indonesia (100%) |
| Direct Visits / mo | 7.53M | 198 |
| 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.
AI-assisted URL threat detection API for developers
Every scan returns a numeric score plus explanatory reasons, so you can act on a link with confidence rather than trusting an opaque verdict.
Short links and redirect chains are unwrapped and followed, revealing hidden final destinations before they reach your users.
Links are classified across phishing, malware, scam, adult, dating, gambling, crypto and spam, supporting nuanced content policies.
Send batches of URLs in a single request and receive per-link risk scores, which suits high-volume pipelines and link shorteners.
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.
Detect AI-generated text and images with benchmark-tested accuracy
Detect AI-generated text and images with benchmark-tested accuracy
AI detector that highlights evidence, not just a score
AI detector that highlights evidence, not just a score
Multi-modal AI detection API that flags synthetic images, text, audio, video and deepfakes
Multi-modal AI detection API that flags synthetic images, text, audio, video and deepfakes
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
Search foundation built from embeddings, rerankers, and reader APIs
