Paraphrase, proofread and summarize text with an AI writing workspace
Paraphrase, proofread and summarize text with an AI writing workspace
GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. Rewriter Tools records 17,871 monthly visits with -3.2% growth and Free Trial pricing.

A free toolbox for rewriting, paraphrasing and generating content
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | gptzero.me | rewritertools.com |
| Pricing Model | Freemium, Paid | Free Trial |
| Monthly Visits | 23.25M (23,246,989) | 17.87K (17,871) |
| MoM Traffic Delta | +5.7M (+32.5%) | -585 (-3.2%) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🇺🇸 United States (35.2%) |
| Direct Visits / mo | 7.53M | 7.2K |
| User Rating | 4.1 | 3.2 |
| 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.

A free toolbox for rewriting, paraphrasing and generating content
Rephrase articles, essays and emails into original, plagiarism-free wording while keeping the original meaning intact.
Three related tools — Paraphrasing Tool, Article Spinner and Article Rewriter — let you choose how lightly or heavily the text is restructured.
Proof your draft and hit an exact length target without leaving the site or installing another extension.
Rewrite text in English, Bengali, Spanish, French and German, useful for tailoring one message to several audiences.
Paraphrase, proofread and summarize text with an AI writing workspace
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.
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.
150+ free online SEO tools and AI writing assistants in one place
150+ free online SEO tools and AI writing assistants in one place

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 detector that highlights evidence, not just a score
AI detector that highlights evidence, not just a score
Free AI paraphraser with seven rewriting modes
Free AI paraphraser with seven rewriting modes

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.