# GPTZero

According to OpenAITools.app telemetry verified on 2026-11-10, GPTZero (gptzero.me) is an AI platform indexed under AI Detector (ranked #11 globally) generating 23.25M monthly visits with a month-over-month traffic delta of +5.7M (+32.5%). Its primary geographic market is United States (54% traffic share), and it operates on a Freemium, Paid pricing model. Top competing alternatives by monthly volume include ZeroGPT (32.86M visits/mo), Copyleaks (2.4M visits/mo), Originality.ai (2.05M visits/mo).

AI detection and writing verification built for schools and editors

## Key Telemetry & Specifications

| Metric | Value |
| :--- | :--- |
| Tool Name | GPTZero |
| Handle | gptzero-me |
| Status | active |
| Origin | official |
| Maintenance | active |
| Official Domain | gptzero.me |
| Website URL | https://gptzero.me |
| Categories | AI Detector, AI Checker, AI Content Detector, AI Plagiarism Checker, AI Grammar Checker, AI API |
| Pricing Model | Freemium, Paid |
| Monthly Visits | 23,246,989 |
| MoM Traffic Change | 5,699,508 |
| MoM Growth Rate | +32.5% |
| Primary Market | United States |
| Market Share | 54% |
| Direct Visits | 7,529,349 |
| Organic Search Visits | — |
| Social Visits | — |
| Referral Visits | 556,122 |
| Email Visits | 102,565 |
| Review Score | 4.1 |
| Saved Count | 41 |
| Supported Platforms | Website |
| Billing Platforms | stripe |
| Attributes | Features: Website; Pricing: Freemium; Pricing: Paid |
| Tags | AI detection, ChatGPT detection, Plagiarism checker, Authorship verification, Academic integrity, Content authenticity, AI content analysis |

## Overview

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.

## Key Features & Capabilities

- **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.

## Primary Use Cases

- **Check student submissions (Teacher):** Run submissions through the detector and supporting reports when reviewing essays or assignments for originality.
- **Self-check drafts before submitting (Student):** Scan drafts in Google Docs or the browser extension before submitting to catch accidentally AI-sounding passages and clean up grammar.
- **Screen contributed content (Editor):** Verify that freelance or agency copy was written by a person, using reports and process evidence when a client requires it.
- **Automate checks at scale (Platform team):** Wire the API into internal review queues so documents are scored automatically instead of pasted by hand.

## 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

## Frequently Asked Questions

### How accurate is GPTZero?
GPTZero reports industry-leading detection accuracy and markets its Advanced Scan as best in class based on independent benchmarking. No detector is perfect, so treat results as evidence to weigh alongside other signals, not as definitive proof.

### Is there a free version?
Yes. There is a free detector you can use in the browser, and a Chrome extension plus Google Docs integration for scanning documents where you already write.

### What else does GPTZero include besides AI detection?
Beyond detection, GPTZero offers a plagiarism checker, writing feedback, a video replay of the writing process, and classroom integrations with Canvas and Google Classroom. It also publishes an API for programmatic checks.

### How does GPTZero handle privacy and student data?
GPTZero states it is SOC 2 Type II compliant, is compliant with FERPA, GDPR, and CCPA, deletes personal data on request, and does not use student writing to train its models.

### What is GPTZero's monthly traffic and growth trend?
GPTZero currently receives 23.25M monthly visits, with a month-over-month traffic change of +5.7M (+32.5% growth rate). Its primary source market is United States (54% share), including 7.53M direct visits/mo and — organic search visits/mo.

### Is GPTZero free? What is its pricing model?
GPTZero operates on a Freemium, Paid pricing model. 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. Supported billing and checkout platforms include: stripe.

### What are the best GPTZero alternatives in 2026?
Based on OpenAITools.app category traffic and feature fit, the top five alternatives to GPTZero are: 1. ZeroGPT (32.86M visits/mo); 2. Copyleaks (2.4M visits/mo); 3. Originality.ai (2.05M visits/mo); 4. Winston AI (604.45K visits/mo); 5. Undetectable AI (3.11M visits/mo).

### Which platforms and core AI capabilities does GPTZero support?
GPTZero is classified under AI Detector, AI Checker, AI Content Detector, AI Plagiarism Checker, supports the following platforms: Website, and its core capability tags include: AI detection, ChatGPT detection, Plagiarism checker, Authorship verification, Academic integrity, Content authenticity.

## Alternatives

| Tool Name | Monthly Visits | Pricing Model | Compare |
| :--- | :--- | :--- | :--- |
| [ZeroGPT](https://openaitools.app/tool/zerogpt) | 32,864,541 | Freemium, Paid | [Compare](https://openaitools.app/compare/gptzero-me-vs-zerogpt) |
| [Copyleaks](https://openaitools.app/tool/copyleaks) | 2,402,494 | Paid, Contact for Pricing | [Compare](https://openaitools.app/compare/copyleaks-vs-gptzero-me) |
| [Originality.ai](https://openaitools.app/tool/originality) | 2,049,639 | Paid | [Compare](https://openaitools.app/compare/gptzero-me-vs-originality) |
| [Winston AI](https://openaitools.app/tool/winston-ai) | 604,454 | Freemium, Free Trial | [Compare](https://openaitools.app/compare/gptzero-me-vs-winston-ai) |
| [Undetectable AI](https://openaitools.app/tool/undetectable-ai) | 3,113,403 | Freemium | [Compare](https://openaitools.app/compare/gptzero-me-vs-undetectable-ai) |
| [Isgen AI Detector](https://openaitools.app/tool/isgen-ai) | 901,917 | Freemium | [Compare](https://openaitools.app/compare/gptzero-me-vs-isgen-ai) |
| [PlagiarismCheck.org](https://openaitools.app/tool/plagiarismcheck-org) | 368,384 | Paid | [Compare](https://openaitools.app/compare/gptzero-me-vs-plagiarismcheck-org) |
| [Scribbr](https://openaitools.app/tool/scribbr) | 7,530,803 | Freemium | [Compare](https://openaitools.app/compare/gptzero-me-vs-scribbr) |
| [Quetext](https://openaitools.app/tool/quetext-com) | 280,056 | Freemium | [Compare](https://openaitools.app/compare/gptzero-me-vs-quetext-com) |
| [Detecting-AI.com](https://openaitools.app/tool/detecting-ai-com) | 505,146 | Freemium, Paid | [Compare](https://openaitools.app/compare/detecting-ai-com-vs-gptzero-me) |
| [StealthGPT](https://openaitools.app/tool/stealthgpt) | 290,918 | Paid | [Compare](https://openaitools.app/compare/gptzero-me-vs-stealthgpt) |
| [Dechecker](https://openaitools.app/tool/dechecker) | 111,347 | Freemium | [Compare](https://openaitools.app/compare/dechecker-vs-gptzero-me) |

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Source: https://openaitools.app/tool/gptzero-me