# GPTZero vs ReWrite

GPTZero 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.

| Metric | [GPTZero](https://openaitools.app/tool/gptzero-me) | [ReWrite](https://openaitools.app/tool/rewrite) |
| :--- | :--- | :--- |
| Website URL | https://gptzero.me | https://chromewebstore.google.com/detail/rewrite/hfcabmeacpcbomdjcoipnnddiofbgokj |
| Categories | AI Detector, AI Checker, AI Content Detector, AI Plagiarism Checker | AI Paraphraser, AI Rewriter, AI Writing Assistants, AI Email Generator |
| Pricing Model | Freemium, Paid | Free |
| Monthly Visits | 23,246,989 | 0 |
| MoM Growth Rate | +32.5% | — |
| Primary Market | United States | Global |
| Direct Visits | 7,529,349 | 0 |
| Review Score | 4.1 | 4.1 |
| Saved Count | 41 | 0 |
| Supported Platforms | Website | Browser Extension |

## 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)

## ReWrite

ReWrite is a Chrome extension built around one job: helping you say what you meant more clearly. When a sentence comes out clumsy, repetitive or vague, you select it and let the extension propose alternative phrasings. Because it lives in the browser, the fix happens where you are already writing, whether that is a document, a social post or a form on a website.

The extension is powered by natural language processing and leans on the Cohere trial API, which is why usage is throttled to roughly five requests per minute. That cap suits occasional polish rather than heavy bulk rewriting, and it keeps the tool free.

A Gmail-specific feature extends the same idea to email: you provide a subject line and the extension generates message copy from it. The publisher, EulerML, describes the extension as a text refinement companion rather than a full writing suite, and the Chrome Web Store listing shows a solid rating from a modest user base.

**Pricing & Plans:** Free. The extension installs at no cost and runs on the Cohere trial API, which is subject to an approximately 5-request-per-minute rate limit. There is no advertised paid plan.

- **In-place paraphrasing:** Select any text and get AI-generated alternatives that keep your intended meaning while improving wording.
- **Context-aware suggestions:** Suggestions are evaluated against surrounding text, so replacements fit the sentence rather than sounding generic.
- **Gmail email drafting:** A dedicated mode drafts full email copy from a subject line directly inside Gmail.
- **Browser-wide availability:** Works anywhere in Chrome via the extension, so you can refine text on any site without switching tabs.

**Strengths:** Free to install with no account required; Works directly on any page inside Chrome; Context-aware rewrites rather than blind synonym swaps; Includes Gmail drafting from a subject line

**Limitations:** Capped to 5 requests per minute on the Cohere trial API; Last updated February 2024, so features are fairly static; No formal paid tier or team controls

[Profile (Markdown)](https://openaitools.app/tool/rewrite.md)

## Frequently Asked Questions

### How do GPTZero and ReWrite compare in monthly traffic?

GPTZero has 23,246,989 monthly visits, while ReWrite has 0. 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%; ReWrite has —.

### 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. ReWrite: Free. Free. The extension installs at no cost and runs on the Cohere trial API, which is subject to an approximately 5-request-per-minute rate limit. There is no advertised paid plan.

## Alternatives

| # | Tool Name | Monthly Visits | MoM Growth Rate | Pricing Model | Summary | Profile (Markdown) |
| :--- | :--- | :--- | :--- | :--- | :--- | :--- |
| 1 | [Grammarly](https://openaitools.app/tool/grammarly) | 58,867,412 | -1.5% | Freemium | Cross-platform AI writing assistant delivering real-time grammar correction, tone alignment, authorship tracking, and team style guides. | [.md](https://openaitools.app/tool/grammarly.md) |
| 2 | [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) |
| 3 | [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) |
| 4 | [Scribbr](https://openaitools.app/tool/scribbr) | 7,530,803 | +14.6% | Freemium | Combines AI detection with professional human proofreading and citation tools, but functions primarily as an editing service. | [.md](https://openaitools.app/tool/scribbr.md) |
| 5 | [LanguageTool](https://openaitools.app/tool/languagetool) | 5,707,795 | -4.2% | Freemium | AI grammar, spelling and style checker for 30+ languages | [.md](https://openaitools.app/tool/languagetool.md) |
| 6 | [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) |
| 7 | [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) |
| 8 | [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) |
| 9 | [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) |
| 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) |

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Source: https://openaitools.app/compare/gptzero-me-vs-rewrite

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