GPTZero records 23,246,989 monthly visits with +32.5% month-over-month growth and Freemium, Paid pricing. WriteGO records 5,264 monthly visits with +118.4% growth and Paid pricing.
AI detection and writing verification built for schools and editors
An AI writing workspace that drafts from page-cited evidence and reviews your document's integrity
| Dimension / Metric | | |
|---|---|---|
| Official Domain | gptzero.me | writego.ai |
| Pricing Model | Freemium, Paid | Paid |
| Monthly Visits | 23.25M (23,246,989) | 5.26K (5,264) |
| MoM Traffic Delta | +5.7M (+32.5%) | +2.85K (+118.4%) |
| Primary Market & Share | 🇺🇸 United States (54%) | 🇺🇸 United States (56.9%) |
| Direct Visits / mo | 7.53M | 2.11K |
| User Rating | 4.1 | 4 |
| 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.
An AI writing workspace that drafts from page-cited evidence and reviews your document's integrity
The ChatPDF tool answers questions about a paper using retrieved excerpts and verifies citations verbatim, so answers stay tied to a specific page.
Turn an approved outline and selected evidence into a draft in a resumable workspace that carries your quotes forward without pasting blind.
Findings must quote your document verbatim and are discarded if the excerpt cannot be found, so every flag points to something you can check.
The AI Detector surfaces review signals you can inspect rather than a single black-box percentage, and is framed as supporting evidence.
Free / Open-sourceParaphrase, proofread and summarize text with an AI writing workspace
Free / Open-sourceParaphrase, 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.
Free / Open-sourceAcademic proofreading, plagiarism checking and AI-powered writing tools in one place
Free / Open-sourceAcademic 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.
Free / Open-sourceThe AI workspace where researchers read, write, and cite with every claim traceable to its source
Free / Open-sourceThe AI workspace where researchers read, write, and cite with every claim traceable to its source
Free / Open-sourceOne AI workspace to write, edit, detect, and humanize text
Free / Open-sourceOne AI workspace to write, edit, detect, and humanize text
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.
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
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.
