Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features.
Annotation Chrome Plugin records 0 monthly visits with — month-over-month growth and Free pricing. GPTZero records 23,246,989 monthly visits with +32.5% growth and Freemium, Paid pricing.
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | chromewebstore.google.com | gptzero.me |
| Pricing Model | Free | Freemium, Paid |
| Monthly Visits | 0 (0) | 23.25M (23,246,989) |
| MoM Traffic Delta | 0 (—) | +5.7M (+32.5%) |
|---|
| Primary Market & Share | 🌐 Global (—) | 🇺🇸 United States (54%) |
|---|
| Direct Visits / mo | 0 | 7.53M |
|---|
| User Rating | 4.2 | 4.1 |
|---|
| Supported Platforms | Browser Extension | Website |
|---|

Add and validate AI-predicted annotations inside Lexis360 and Sesame documents
Add your own annotations to the document currently open in the browser, without leaving the host application.
Contacts internal SIE web services to fetch annotations produced by a prediction AI component for the document you are viewing.
Review and validate returned annotations so that human judgement is applied before labels are accepted.
Designed specifically to help classify and categorise documents in editorial and legal content workflows.
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.
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.
#2
AI grammar, spelling and style checker for 30+ languages
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.


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.

Excels at scanning both text and images with high accuracy, but offers fewer free daily checks than GPTZero.
One browser agent that combines every major AI model with web automation
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.

SpecialistHumanize AI text and check it against AI detectors
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.
AI grammar, spelling and style checker for 30+ languages
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.
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.
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
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