Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features.
GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. SummarizeIt records 0 monthly visits with — growth and Free pricing.

Free Chrome extension that summarizes any webpage with the GPT-3 API
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | gptzero.me | chrome.google.com |
| Pricing Model | Freemium, Paid | Free |
| Monthly Visits | 23.25M (23,246,989) | 0 (0) |
| MoM Traffic Delta |
| +5.7M (+32.5%) |
| 0 (—) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🌐 Global (—) |
|---|
| Direct Visits / mo | 7.53M | 0 |
|---|
| User Rating | 4.1 | 1.7 |
|---|
| Supported Platforms | Website | Browser Extension |
|---|
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.

Free Chrome extension that summarizes any webpage with the GPT-3 API
Summarize the page in your active Chrome tab without copying or pasting any text.
The extension uses OpenAI's GPT-3 API to generate condensed, readable versions of long text.
Install from the Chrome Web Store and use it while browsing; no configuration screens or account setup are described.
Built for getting the gist of long articles, posts and pages without reading every paragraph.
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.
#2SpecialistCombines 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.
One-click AI assistant for browsing, writing and research

Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition.
Highlight the web, learn in public, and build your AI clone

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
Free AI Summarizer for text, articles, URLs and images
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 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.
One-click AI assistant for browsing, writing and research
Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition.
Highlight the web, learn in public, and build your AI clone
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
Free AI Summarizer for text, articles, URLs and images