Copyleaks – AI Content Detector

Copyleaks AI content detector tool. Website screenshot.

Content | Multilingual | API Support


Copyleaks offers an AI detector that identifies text generated by AI models, claiming >99% accuracy and a low false positive rate of 0.2%.

Who Can Use It:

  • Teachers verifying originality of student work.
  • AI researchers ensuring training data has no AI text.
  • Publishers identifying AI-generated content before publishing.
  • Businesses enforcing policies on use of AI content.

How It Works?

The AI detector identifies AI vs. human authorship, flagging even plagiarized or paraphrased AI-generated sections.

Key Features:

  • Comprehensive coverage across different AI language models (ChatGPT, Gemini, and Claude).
  • Fast, accurate detection using machine learning.
  • Military-grade security and privacy standards (256-bit encryption, GDPR-compliant).
  • Multilingual (see supported languages).


  • Detection rates can vary from one language to another.
  • Reduced accuracy with finely mixed human/AI text.

Overall: ★★★★★

The AI content detector from Copyleaks excelled in our testing.

Human written text detection: ★★★★☆

It detected our human text as human (no percentage given).

Modified AI-generated text detection: ★★★★★

It detected our modified AI-generated text as 100% AI.

AI-generated text detection: ★★★★★

It detected our AI-generated text as 100% AI. 

Disclaimer: Results may vary. Always do your own testing.

The tools on this website are tested using a specific testing method for each category. This ensures they are evaluated fairly and in a way most people would use them.

AI detectors may seem similar at first glance, but they come with different features and are intended for various use cases. Choose a tool that best suits your specific needs for the most accurate results. 

Paid tools are usually more accurate and better for advanced users needing integration and bulk detection. 

Free tools can be hit-or-miss, with usage limits and varying accuracy. 

Therefore, we suggest you check out all of our AI detectors to find the best option for you. logo



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