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GPTZero

verifiedFreemium

GPTZero AI text detector; widely used with very high traffic.

What it does

GPTZero is an AI detection tool designed to identify text generated by large language models such as ChatGPT, GPT-4, Gemini, Claude, and LLaMA. It offers features like sentence-level highlighting, AI vocabulary detection, plagiarism checking, and authorship verification. GPTZero aims to help educators, writers, and other professionals maintain academic integrity, ensure authenticity, and detect potential AI-generated content in various contexts.

How to use: To use GPTZero, simply paste the text you want to check into the provided text box or upload a file. The tool will then analyze the text and provide an overall detection result, highlighting sentences where AI is detected. For more extensive use, you can sign up for a free account or download the Chrome extension.

Core features

  • AI Detection
  • Advanced AI Scan
  • AI Vocabulary Detection
  • Plagiarism Checker
  • Authorship Verification
  • Source Finder
  • Grammar Check
  • AI Grader

Use cases

  • Detecting AI-generated content in student assignments
  • Verifying the authenticity of writing
  • Identifying plagiarism
  • Ensuring originality in content creation
  • Defending against AI phishing and cyberattacks
  • Training machine learning models with human data

Pricing

Essential: $8.33/month (Billed $99.96 annually)
Premium: $12.99/month (Billed $155.88 annually)
Professional: $24.99/month (Billed $299.88 annually)

Reviews

Big-picture takes: what it's for and whether it delivers. High-engagement videos from YouTube — not sponsored.

Rephrasy AI Review - (2026) | AI Humanizer That ACTUALLY Bypasses GPTZero and Turnitin

Daniel | Tech & Data · 23K views

GPTZero Review 2026: Is This AI Detector Actually the BEST?

The Nerdy Novelist · 15K views

TwainGPT Review - 2026 | This AI Humanizer Bypasses Every AI Detector (GPTZero, ZeroGPT & More)

Daniel | Tech & Data · 14K views

Tutorials

Step-by-step: exactly how to get things done with it.

Make your ai essays stealth and beat gptzero easily

Lokko Labs · 205K views

BYPASS A.I. detector GPTZERO! The hardest A.I. detector to crack!

Brand Nat · 134K views

How to Use GPTZero | GPTZero Tutorial

GPTZero · 73K views