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The #1 Directory for AI Detectors

Human or AI? Let's find out.

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Price
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PapersOwl
Plagiarism
Free
★★★☆☆
Free plagiarism checker designed for students with an option to connect with professional editors to improve their text.
PerfectEssayWriter
Plagiarism
Freemium
★★★☆☆
PerfectEssayWriter's AI plagiarism checker offers text analysis and similarity detection, requiring signup for free access.
PromptOpti
Content
Free
★★★☆☆
PromptOpti's AI Detector is a free, no-signup tool that identifies AI-generated content using third-party integrations.
GPTZero
Plagiarism
Freemium
★★★★☆
GPTZero's plagiarism checker identifies duplicated content by comparing text against billions of online sources.
Summarizer.org
Content
Free
★★★★☆
Summarizer.org's free AI detector highlights AI vs human content and shows detection scores, with a 3,000-word limit.
Clarify
Content
Free
★★★★☆
Clarify.ai's free AI detector checks content against multiple detection tools, with a 2,500-word limit per scan.
Ludwig
Content
Freemium
★★★☆☆
Ludwig.guru, an EU-funded AI platform, provides AI content detection with a generous free tier.
FAQ

Frequently Asked Questions

DetectorTools.ai is the largest directory dedicated to AI detectors. It is free to use and will help you find the latest and greatest AI detectors for personal, professional, or academic use.

DetectorTools.ai groups AI detectors into four categories: Free (no cost, unrestricted), Free Trial (full access for a limited time), Freemium (free with limited features), and Paid (requires payment for access).

Not all AI detectors are created equal. Some work excellently while others might struggle with certain use cases. That's why we have an accuracy rating for each tool that we list, so you can make an informed decision on which tool to use. Disclaimer: Results may vary. Always do your own testing.

We distinguish three user categories: Personal (for individual use, small-scale projects, and students), Professional (for team-based solutions, covering both small businesses and large enterprises), and Academic (for educators and advanced students requiring top-tier tools).

Under the "Tool Categories" tab, navigate to the category you are interested in. The category pages (for content detectors and plagiarism checkers) have more detailed filter options, including a filter to separate multilingual tools from English-only tools.

DetectorTools.ai is updated weekly. New tools are added as they enter the market or are submitted to us. To stay most up-to-date with our directory, subscribe to our newsletter or follow us on X.

We test all the tools following a set testing protocol. If you have any questions or suggestions, write to us at info@detectortools.ai or message us on X.

We are happy to answer your questions. You can reach out to us at info@detectortools.ai or message us on X.

A closer look

What We're All About

Have you ever questioned the authenticity of the:
  • Text you're reading - is it original, plagiarized, or AI-generated?
  • Images you're viewing - are they real, manipulated, or entirely AI-created?
  • Videos you're watching - are they genuine, AI-generated, or malicious deepfakes?
  • Voices you're hearing - are they from real people or synthetically produced?
  • Code you're reviewing - is it original work or AI-assisted?

If yes, our directory provides a searchable database of tested tools with:

  • Tool descriptions.
  • Real-life testing results.
  • Custom filters for all users.

This is what we're all about: helping you find the right AI detector faster.

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