# GPTZero vs Outwrite 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. | Metric | [GPTZero](https://openaitools.app/tool/gptzero-me) | [Outwrite](https://openaitools.app/tool/outwrite-com) | | :--- | :--- | :--- | | Website URL | https://gptzero.me | https://outwrite.com | | Categories | AI Detector, AI Checker, AI Content Detector, AI Plagiarism Checker | AI Writing Assistants, AI Writing, AI Grammar Checker, AI Paraphraser | | Pricing Model | Freemium, Paid | Freemium | | Monthly Visits | 23,246,989 | 23,167 | | MoM Growth Rate | +32.5% | -16.8% | | Primary Market | United States | Singapore | | Direct Visits | 7,529,349 | 13,698 | | Review Score | 4.1 | 3.7 | | Saved Count | 41 | 0 | | Supported Platforms | Website | Website | ## GPTZero GPTZero grew out of the practical problem that teachers and editors faced once generative text became common: how do you tell whether a piece of writing came from a person or a model? The product answers that with a detector that returns an overall AI likelihood score and highlights individual sentences it considers machine-written, so a reader can see where the suspicion comes from rather than just receiving a single verdict. Over time the platform widened from a single text box into a suite aimed at institutions. Detector results are paired with a plagiarism checker, grammar and writing feedback, and optional process verification such as a writing replay that records how a document was typed. A Chrome extension and Google Docs add-on push detection into the tools students and staff already use, and the company offers classroom integrations plus an API for bulk or programmatic checks. Because the buyers are largely schools, districts, and universities, GPTZero leans heavily on privacy and compliance claims: it states SOC 2 Type II compliance and alignment with FERPA, GDPR, and CCPA, and says student writing is not used to train models. The practical takeaway is that it is positioned as an academic-integrity and editorial-review tool rather than a novelty checker, which also means its more powerful features sit in paid tiers. **Pricing & Plans:** Freemium plus paid plans. A free tier provides core detection with character limits per scan, while paid individual and institutional plans unlock advanced scan modes, higher limits, writing reports, and classroom integrations. Enterprise and API access are quoted separately. - **Sentence-level AI detection:** 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. - **Multi-model coverage:** Flags AI text from major model families including ChatGPT, Gemini, Claude, Llama, and others, rather than training for a single model. - **Browser and docs extensions:** A Chrome extension and Google Docs add-on bring scanning into Gmail, Docs, Classroom, and other surfaces you already work in. - **Plagiarism checking:** Checks content for copied passages from outside sources so you can separate AI-generation questions from originality questions. - **Writing process verification:** Writing replay and advanced reports offer evidence about how a document was produced, useful for academic integrity workflows. **Strengths:** Sentence-level highlighting shows why a passage was flagged instead of only giving a score; Covers text from many different AI model families, not just one chatbot; Integrations with Chrome, Google Docs, Canvas, and Google Classroom fit existing school workflows; Publishes concrete compliance claims (SOC 2 Type II, FERPA, GDPR, CCPA) that institutions can review **Limitations:** Detection is probabilistic and can flag polished human writing or miss lightly edited AI text; Free scans are capped by character count, and useful reporting features require payment; Lean heavily on a single score without human judgment can lead to unfair accusations [Profile (Markdown)](https://openaitools.app/tool/gptzero-me.md) ## Outwrite Outwrite is an AI writing assistant that sits where you already write. Rather than being a separate editor you have to visit, it works as a Chrome or Edge extension and through integrations with Google Docs, Microsoft Word, Outlook, Gmail, LinkedIn and WordPress, so corrections and suggestions appear directly beside your text. The core experience is fast and unobtrusive: as you type, Outwrite flags spelling, grammar and punctuation slips so you can fix them without breaking your train of thought. Beyond basic proofreading, Outwrite positions itself as a tool for writing with impact. The premium tier adds style and structure suggestions that improve how a sentence flows, a paraphrasing tool that can shorten, lengthen or rephrase a line, and passive-to-active voice conversion that makes writing more direct. Writing statistics show readability and grade-level scores in real time, which is helpful when you are writing for a specific audience, and the checker supports English, French and Spanish. Outwrite offers three tiers: a free personal plan to start, a Pro plan for advanced style and structure improvements, and a Teams plan aimed at keeping an organisation's communications consistent and clear. The company reports around one million users and develops the product from Sydney, Australia, with roots in the GradeProof writing technology. **Pricing & Plans:** Outwrite is freemium: you can create a free account and check your writing at no cost, while Outwrite Pro unlocks advanced style and structure suggestions, and Outwrite for Teams is priced for organisations. See the pricing page for current rates. - **Advanced grammar checking:** Catch and fix spelling, grammar and punctuation errors instantly as you write. - **Style and clarity suggestions:** Improve sentence flow and overall quality with rewrites that go beyond simple corrections. - **Built-in paraphrasing tool:** Rewrite sentences to make them shorter, longer or differently phrased while keeping the meaning. - **Passive voice conversion:** Turn passive constructions into active ones to make writing more direct and readable. - **Writing statistics:** Track readability and grade-level scores in real time as you draft, plus multilingual checking for English, French and Spanish. **Strengths:** Works inside the apps you already use, including Chrome, Edge, Word and Google Docs; Goes past grammar checks into style, paraphrasing and readability; Free plan available plus dedicated Pro and Teams tiers; Writing statistics give real-time readability and grade-level feedback **Limitations:** The most useful style and structure suggestions sit behind the paid Pro plan; Multilingual checking covers English, French and Spanish rather than every language [Profile (Markdown)](https://openaitools.app/tool/outwrite-com.md) ## Frequently Asked Questions ### How do GPTZero and Outwrite compare in monthly traffic? GPTZero has 23,246,989 monthly visits, while Outwrite has 23,167. Traffic estimates describe audience size, not product quality. ### How do their growth rates compare? GPTZero has a month-over-month growth rate of +32.5%; Outwrite has -16.8%. ### How does pricing compare? GPTZero: Freemium, Paid. Freemium plus paid plans. A free tier provides core detection with character limits per scan, while paid individual and institutional plans unlock advanced scan modes, higher limits, writing reports, and classroom integrations. Enterprise and API access are quoted separately. Outwrite: Freemium. Outwrite is freemium: you can create a free account and check your writing at no cost, while Outwrite Pro unlocks advanced style and structure suggestions, and Outwrite for Teams is priced for organisations. See the pricing page for current rates. ## Alternatives | # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) | | :--- | :--- | :--- | :--- | :--- | :--- | :--- | | 1 | [QuillBot Paraphraser](https://openaitools.app/tool/quillbot-paraphraser) | 36,630,337 | +2.3% | Freemium | Paraphrase, proofread and summarize text with an AI writing workspace | [.md](https://openaitools.app/tool/quillbot-paraphraser.md) | | 2 | [ZeroGPT](https://openaitools.app/tool/zerogpt) | 32,864,541 | +19.7% | Freemium, Paid | Offers broad multilingual AI detection and text humanization, but lacks GPTZero's detailed deep-scan reporting features. | [.md](https://openaitools.app/tool/zerogpt.md) | | 3 | [Scribbr](https://openaitools.app/tool/scribbr) | 7,530,803 | +14.6% | Freemium | Academic proofreading, plagiarism checking and AI-powered writing tools in one place | [.md](https://openaitools.app/tool/scribbr.md) | | 4 | [Undetectable AI](https://openaitools.app/tool/undetectable-ai) | 3,113,403 | +17.5% | Freemium | Combines AI detection with robust text humanization tools, but focuses more heavily on rewriting than pure verification. | [.md](https://openaitools.app/tool/undetectable-ai.md) | | 5 | [Copyleaks](https://openaitools.app/tool/copyleaks) | 2,402,494 | -14.1% | Paid, Contact for Pricing | Provides robust enterprise-grade content integrity and cross-media detection, but can be more expensive for individual users. | [.md](https://openaitools.app/tool/copyleaks.md) | | 6 | [Originality.ai](https://openaitools.app/tool/originality) | 2,049,639 | +2.8% | Paid | Delivers strong fact-checking and comprehensive site-wide plagiarism audits, but has stricter paywalls than GPTZero. | [.md](https://openaitools.app/tool/originality.md) | | 7 | [ProWritingAid](https://openaitools.app/tool/prowritingaid-com) | 1,623,266 | +17.6% | Freemium, Paid | A storytelling toolkit that checks your grammar and coaches your craft | [.md](https://openaitools.app/tool/prowritingaid-com.md) | | 8 | [Isgen AI Detector](https://openaitools.app/tool/isgen-ai) | 901,917 | +5.8% | Freemium | Provides detailed sentence-level analysis for multilingual text, but lacks GPTZero's broad academic brand recognition. | [.md](https://openaitools.app/tool/isgen-ai.md) | | 9 | [Hemingway Editor](https://openaitools.app/tool/hemingway-editor) | 605,169 | -8.6% | Free Trial, Paid, Free | Write bolder, clearer prose with instant readability and grammar feedback | [.md](https://openaitools.app/tool/hemingway-editor.md) | | 10 | [Winston AI](https://openaitools.app/tool/winston-ai) | 604,454 | +5.4% | Freemium, Free Trial | Excels at scanning both text and images with high accuracy, but offers fewer free daily checks than GPTZero. | [.md](https://openaitools.app/tool/winston-ai.md) | --- Source: https://openaitools.app/compare/gptzero-me-vs-outwrite-com More Markdown: [Categories](https://openaitools.app/categories.md) · [Traffic rankings](https://openaitools.app/rankings.md) · [llms.txt](https://openaitools.app/llms.txt)