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GPTZero

by GPTZero

Widely used AI-content detector for educators and editors.

Content Detection & Safety Free tier, paid Premium/Educator plans

What is GPTZero?

GPTZero was one of the first widely adopted tools for detecting AI-generated text, originally built by a student to help teachers spot AI-written assignments. It now serves educators, publishers, and hiring teams checking submitted writing.

Key features

  • Sentence-level highlighting of likely AI-generated passages
  • Batch scanning for checking many documents at once
  • Writing Report showing revision history and editing patterns
  • Browser extension for checking text anywhere online
  • Education-focused plans with classroom management features

How to get started

  1. Go to gptzero.me and paste or upload the text to check
  2. Review the sentence-level AI-likelihood highlighting
  3. Use batch scanning for checking multiple submissions at once
  4. Check the Writing Report for additional context if available

Use cases

  • Teachers screening student assignments for AI-generated text
  • Publishers and editors checking submitted articles
  • Hiring teams reviewing written application materials
  • Content platforms enforcing originality policies

GPTZero vs. alternatives

ToolHow it compares
GPTZeroWidely used AI-content detector for educators and editors.
Originality.aiadds plagiarism checking alongside detection
Copyleaksmore detailed source-level breakdowns

FAQ

Is GPTZero free to use?

GPTZero's plans: Free tier, paid Premium/Educator plans. Pricing and free-tier limits change over time, so check the official site above for the latest details.

What is GPTZero used for?

Widely used AI-content detector for educators and editors.

Who is GPTZero best for?

GPTZero is a good fit for teachers screening student assignments for AI-generated text, or publishers and editors checking submitted articles.

What are the alternatives to GPTZero?

Commonly compared alternatives include Originality.ai and Copyleaks, see the comparison above for how they differ.

Related tools

Last reviewed: 2026-08 · Reviewed by AIKetra editors · How we evaluate tools