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. Outwrite records 23,167 monthly visits with -16.8% growth and Freemium pricing.

Write with impact, everywhere you type
| Dimension / Metric | ![]() | |
|---|---|---|
| Official Domain | gptzero.me | outwrite.com |
| Pricing Model | Freemium, Paid | Freemium |
| Monthly Visits | 23.25M (23,246,989) | 23.17K (23,167) |
| MoM Traffic Delta | +5.7M (+32.5%) | -4.68K (-16.8%) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🇸🇬 Singapore (26.8%) |
| Direct Visits / mo | 7.53M | 13.7K |
| User Rating | 4.1 | 3.7 |
| 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.

Write with impact, everywhere you type
Catch and fix spelling, grammar and punctuation errors instantly as you write.
Improve sentence flow and overall quality with rewrites that go beyond simple corrections.
Rewrite sentences to make them shorter, longer or differently phrased while keeping the meaning.
Turn passive constructions into active ones to make writing more direct and readable.
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.

Academic proofreading, plagiarism checking and AI-powered writing tools in one place
Academic proofreading, plagiarism checking and AI-powered writing tools in one place
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.

A storytelling toolkit that checks your grammar and coaches your craft
A storytelling toolkit that checks your grammar and coaches your craft

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.
Write bolder, clearer prose with instant readability and grammar feedback
Write bolder, clearer prose with instant readability and grammar feedback

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

Express yourself with confidence — rewrite, proofread and summarize in one click
Express yourself with confidence — rewrite, proofread and summarize in one click