
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
#1GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. ReWrite records 0 monthly visits with — growth and Free pricing.

Free AI paraphrasing right inside your Chrome browser
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | gptzero.me | chromewebstore.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 | 4.1 |
|---|
| 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 AI paraphrasing right inside your Chrome browser
Select any text and get AI-generated alternatives that keep your intended meaning while improving wording.
Suggestions are evaluated against surrounding text, so replacements fit the sentence rather than sounding generic.
A dedicated mode drafts full email copy from a subject line directly inside Gmail.
Works anywhere in Chrome via the extension, so you can refine text on any site without switching tabs.

Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
#1Paraphrase, proofread and summarize text with an AI writing workspace
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
Free AI paraphraser with seven rewriting modes
Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides.
Paraphrase, proofread and summarize text with an AI writing workspace
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
Free AI paraphraser with seven rewriting modes