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GPTZero

Detects AI-generated text with high accuracy, ideal for education.

GPTZero for Students: AI Detection and Writing Feedback

GPTZero is a AI Detection that scans submitted text and flags sentence-level AI-generated content. Students use GPTZero to check drafts before submission and get feedback for improving original writing. GPTZero handles text and image scanning well, while verifying spoken or handwritten work still needs a separate method.

Monthly visitors
18M
Sep 2026
59.1%
2025-10: 16,916,3952025-11: 17,869,6872025-12: 15,214,7362026-01: 14,587,2752026-02: 16,142,8752026-03: 18,535,3542026-04: 19,100,6652026-05: 16,839,8202026-06: 12,030,8422026-07: 10,116,4152026-08: 11,032,1922026-09: 17,547,481
Peak month Apr · 19M
Avg / month 15M
Audience — top countries
United States: 54.5%Canada: 5.5%Australia: 4%Philippines: 3.1%
55% US
  • United States 54.5%
  • Canada 5.5%
  • Australia 4%
  • Philippines 3.1%
  • Other 33%
Traffic estimates powered by SimilarWeb · updated monthly

What GPTZero Does

GPTZero turns submitted text or images into a sentence-by-sentence AI probability score in one scan.

GPTZero runs uploaded documents, pasted text, or images through detection models trained to recognize output from ChatGPT, GPT-5, Claude, and Gemini, then highlights the sentences most likely AI-written. It also runs a plagiarism check and records the writing process inside Google Docs, so a flagged paragraph can be checked against an actual edit history instead of a guess. The Chrome extension surfaces the same highlights while browsing.

Main Features

AI Detection

GPTZero scans text against models trained on output from GPT-5, Claude, Gemini, and LLaMa, then returns an overall score plus sentence-level highlights. Multilingual detection is available on paid plans. Because scoring happens per sentence rather than per document, a partially AI-edited paragraph does not get buried in an average score.

Writing Replay

GPTZero records the writing process inside Google Docs, capturing keystrokes, copy-paste events, and typing pace over time. A reviewer can watch the document being built rather than judging the finished text alone. This gives writers a way to prove authorship when a detector flags legitimate work as AI-generated.

Plagiarism Checker

GPTZero scans submitted text against internet sources to find copied or unoriginal passages, running alongside the AI detection scan in the same pass. Educators get both originality signals in one report instead of running two separate tools, which shortens the review step per submission.

Integrations

GPTZero connects to Google Classroom, Canvas, Moodle, Zapier, and a Chrome extension, plus a documented API with sample code in 17 languages. Enterprise-grade security and LMS integration are limited to the Professional tier, so classroom-scale deployments need that plan rather than Free or Premium.

Use Cases

  1. Students Strengthen Writing Skills

    Students paste a draft into GPTZero to check for AI-flagged sentences before submitting an assignment. The Expert Feedback tool, built with Princeton University professors, suggests structural fixes, turning a detection scan into a revision step.

  2. Educators Maintain Academic Integrity

    Educators upload student submissions to GPTZero to check originality and screen for plagiarism across a class set at once. Canvas and Google Classroom integrations pull submissions in directly, and batch scanning removes manual uploading for large classes.

  3. Writers Verify Content Originality

    Writers run finished articles through GPTZero before publishing to confirm the text will not read as AI-generated to an editor’s own detector. Writing Replay in Google Docs backs that score with a visible edit history.

Best For / Not For

GPTZero is built for people who need to verify whether text was AI-written or prove that it was not, rather than for teams needing content generation or rewriting tools.

Students, Educators, Writers, and Recruiters make up its core audience, using it to check submissions, essays, articles, and job-application writing samples respectively, often through the Chrome extension or an LMS integration.

GPTZero’s free tier caps out at 10,000 words per month with only one advanced scan included, so anyone screening large volumes of documents regularly will hit the ceiling fast and need a paid plan.

Pricing

GPTZero’s Free plan covers 10,000 words per month at no cost, while the Premium plan runs $9.09 per user/month billed annually for 300,000 words per month.

Plan Price Included
Free Free 10,000 words per month
Premium $9.09 / user/month, billed annually 300,000 words per month
Professional $17.49 / user/month, billed annually 500,000 words per month
Team $24.99 / user/month, billed annually for 2 members

Professional adds overage of up to 2 million words once the monthly cap of 500,000 words is reached, at added cost.

Pricing checked 2026-09-13.

Quick Comparison

Originality AI is GPTZero’s main alternative for teams needing combined AI-detection and plagiarism screening. Originality AI focuses on publisher and SEO content workflows with team-based scan history and website scanning. GPTZero adds Writing Replay inside Google Docs and Canvas or Moodle grading integrations that Originality AI does not target. Choose Originality AI if managing a content team’s published output at scale. Choose GPTZero if grading student submissions or verifying authorship through LMS platforms.

Verdict

GPTZero processes up to 500,000 words per month on its Professional plan at $17.49 per user/month, covering sentence-level AI detection and plagiarism checks in one scan. It fits educators and writers needing originality proof, not teams needing content generation.

Visit GPTZero

Frequently Asked Questions

Yes, GPTZero’s Free plan covers 10,000 words per month at no cost. Paid plans start at $9.09 per user/month billed annually for 300,000 words.

GPTZero integrates with Google Classroom, Canvas, Moodle, Google Docs, Zapier, and a Chrome extension. Developers can also connect through GPTZero’s API, which ships with sample code in 17 languages.

Yes, for educators on the Professional plan, which scans up to 250 files at once with page-by-page scanning and LMS integration. The Free plan’s 10,000-word cap makes it unsuitable at that scale.

GPTZero has been evaluated by researchers from top universities like MIT, Harvard, and Stanford. It has shown a 96.5% accuracy rate in detecting mixed documents where both AI and human writing is involved.

You can upload various file types such as docx, pdf, and image files. GPTZero can analyze up to 50 files at a time, making it convenient for large-scale content analysis.

GPTZero is designed with the highest grade of security and data privacy in mind. Your writing process data is never shared with third parties, ensuring your information remains confidential.

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