Copyleaks - Plagiarism detector: Advanced AI tool for detecting even the slightest plagiarism variations in multiple languages. API integration, collaboration reports, and military-grade security. Ideal for individuals, educational institutions, businesses, and publishers.

Our Verdict

Copyleaks Plagiarism Detector is at the forefront of plagiarism detection technology, with its ability to identify AI-generated content, support multiple languages, and offer source code transparency.

It caters to individual users, enterprises, and academic institutions, making it a versatile and invaluable tool in the fight against plagiarism in the Internet world.

With its flexible pricing and user-friendly features, Copyleaks empowers content creators to protect their work and maintain the integrity of written materials in an evolving digital landscape.

What is the Copyleaks Plagiarism Detector?


The Copyleaks Plagiarism Detector is a cutting-edge tool that empowers users to identify potential plagiarism across nearly every language.

It is equipped with advanced AI technology that can detect even the subtlest variations within text, including hidden characters, paraphrasing, and AI-generated content.

Plagiarism has evolved, and so has this detector, ensuring authenticity and ownership are upheld in an increasingly complex digital landscape.

Why Use a Plagiarism Checker

Using plagiarism checker tools has become an indispensable practice in the digital age. With the vast amount of information available on the internet, it's all too easy for content to be copied, intentionally or inadvertently, without proper attribution.

Plagiarized content can have legal consequences, lower search result placements by search engines, and reduced organic traffic.

Search engines prioritize original, high-quality content in their rankings. By employing a plagiarism checker, website owners, content creators, and digital marketers can ensure that their content remains authentic, unique, and in compliance with search engine optimization guidelines.

Today, the market offers different plagiarism-checking tools to guarantee authenticity, ensuring that written work remains original and properly cited.

They are valuable plagiarism tools for students, educators, content creators, and businesses alike, allowing them to maintain the integrity of their work and safeguard against unintentional plagiarism.

These tools not only help uphold ethical standards but also play a crucial role in maintaining the credibility and quality of academic and professional content.

Whether you're a student submitting an essay, an author publishing a book, or a business generating web content, a plagiarism checker is a fundamental safeguard against the pitfalls of plagiarism and creating duplicate content.

Key Features

It goes beyond traditional word-for-word detection. We were impressed to explore the following features:

  • Plagiarism Checking Tool

    Apart from plagiarism search, the tool provides a detailed report with an overview of plagiarism scores, a duplicate content checker, word count, and more features.

  • Cross-Language Plagiarism Detection

    Copyleaks offers over 30 cross-language plagiarism scans and allows you to scan a document in one language and uncover plagiarism and duplicate content matches in multiple languages, such as Chinese, German, and Portuguese. This feature is invaluable in a globalized world with multilingual content.

  • Source Code Plagiarism Detection

    Copyleaks maintains source code transparency by identifying AI-generated code and detecting code plagiarism and modifications. Additionally, it provides licensing alerts to help users avoid potential copyright infringement.

  • Scheduling Regular Scans

    Unlike many other tools and online plagiarism checkers, Copyleaks also gives users the option to schedule and run scans periodically. This is particularly helpful to website owners who want to be sure the content on their own website isn’t duplicated or copied on other sites across the web.

Who Can Benefit from Using the Copyleaks Plagiarism Detector

For Individual Use

Whether you're a student, a freelance writer, or simply need quick plagiarism detection, Copyleaks offers a user-friendly experience for individuals, available for free.

For Enterprise Use

Enterprises can harness the power of Copyleaks Plagiarism Detector by seamlessly integrating it into their native platforms through a fully white-labeled API. This ensures that the detection process aligns with your brand identity.

For Educational Institutions

Copyleaks offers a simple Learning Management System (LMS) integration that empowers educators and students by promoting error-free writing and ensuring that all necessary tools are conveniently accessible in one place.

Pricing Plan


Copyleaks makes award-winning plagiarism detection and market-leading AI detection accessible with flexible pricing options.

Copyleaks offers a free version of its plagiarism checker that allows you to scan up to 10 pages of text for plagiarism.

With a subscription, you can scan up to 1,200 pages per month, with each page covering up to 250 words of scanned content.

Subscribers receive in-depth Similarity Reports with each scan. This detailed report offers a comprehensive analysis of potential plagiarism of someone else's work.

Whether you need to check image-based text, compare websites, scan source code, or more, Copyleaks offers a versatile solution for all your plagiarism detection needs.

Pros and Cons of Copyleaks Plagiarism Detector

Here are some of the advantages and shortcomings of the tool we think you need to be aware of:


AI-Generated Content Detection: Copyleaks' remarkable AI detection accuracy, including AI models like GPT-4 and Bard, ensures that even the most advanced forms of plagiarism are uncovered.

Cross-Language Plagiarism Detection: Supporting over 30 cross-language scans, it ensures that plagiarism can be identified in a multilingual context.

Source Code Transparency: It identifies AI-generated code, detects code plagiarism and modifications, and provides licensing alerts, making it invaluable for developers and coders.


Accuracy: Some users have reported that partial matches may occur when the detector matches a single source text against multiple sources. This situation arises when a sentence or paragraph is borrowed from various origins. In such cases, the plagiarism detector might struggle to pinpoint the exact source from which the content was copied, leading to the possibility of false plagiarism flags.

How We Tested the Copyleaks Plagiarism Detector


In our evaluation of the Copyleaks Plagiarism Detector, we employed a comprehensive testing approach based on several key criteria, ensuring a thorough review of its capabilities. Here are the criteria we used, along with our opinions on each:

Accuracy in Plagiarism Detection

Copyleaks Plagiarism Detector demonstrated a remarkable degree of accuracy in identifying potential instances of plagiarism. It excels in detecting both conventional and AI-generated content, making it a valuable tool for content creators, educators, and organizations seeking to maintain originality and integrity.

Language Versatility

The tool's support for over 100 languages is commendable. Copyleaks' ability to identify plagiarism across diverse linguistic landscapes, including languages with intricate character variations, ensures that users can protect their work and maintain its authenticity in a global context.

Cross-Platform Integration

Copyleaks' versatility in catering to individual users, enterprises, and educational institutions through white-labeled API integration is a significant strength. This feature allows for a seamless incorporation of the plagiarism detection tool into various platforms, ensuring a tailored and consistent user experience.

AI Content Detection

Copyleaks' impressive AI content detection capabilities, including the ability to detect the latest AI models such as GPT-4 and Bard, reflects the tool's commitment to staying at the forefront of the evolving landscape of content theft. This feature empowers users to uncover even the most advanced forms of plagiarism.

User-Friendly Interface

We found Copyleaks to offer an intuitive and very simple interface. This makes it accessible to a wide range of users, from students to professionals, ensuring a seamless experience when utilizing the tool for plagiarism detection.

Our Review Rating System

We employ a 5-star rating system for all the AI tools we review to give you a comprehensive idea of the overall utility of each tool.

  • Five stars: Editor’s choice
  • Four stars: An excellent choice
  • Three stars: Meets some of our standards
  • Two stars: Doesn’t meet our standards
  • One star: Not recommended

Our team of experts has awarded this AI tool an overall rating of four stars for its ability to uncover AI-generated content and support multilingual scans. Its user-friendly interface, range of features, and flexible pricing options make it an indispensable ally for content creators and educators.

Rating 4/5

Alternatives to Plagiarism Detector


Our team also tested and reviewed several other plagiarism checker tools that cater to diverse needs and preferences.


Notably, Grammarly's plagiarism checker is a great tool that offers a user-friendly and widely used platform for writers and students to verify the originality of their content while also providing comprehensive grammar and writing assistance.


Turnitin, another popular plagiarism detector tool that is now a staple in academic institutions, specializes in academic integrity and originality checks for students and educators.

Over the course of more than two decades, Turnitin has collaborated with educational institutions to foster a culture of honesty, equity, and impartiality in various academic disciplines and assessment formats.

Their plagiarism detectors are employed by educational establishments and certification as well as licensing programs to safeguard academic integrity and ensure high research paper quality They are also used by students and professionals to produce their finest, authentic work.


Copyscape is a free plagiarism checker that helps you locate copies of your web pages on the internet.

For more advanced protection, Copyscape Premium provides enhanced plagiarism detection, along with features like originality checks, support for PDF and Word file uploads, batch search, private indexing, case tracking, an API, and seamless integration with WordPress.

Copysentry, another great service the platform offers, goes a step further by automatically scanning the web on a daily or weekly basis and sending you email alerts when new instances of your content being copied are detected.

Copyscape easily detects plagiarized text and provides free plagiarism warning banners for your website to deter potential plagiarists, a tool to compare two web pages or articles, and a comprehensive guide on addressing plagiarism issues.

Plagiarism Detector FAQ

Here are some of the most frequently asked questions about using AI tools for detecting plagiarism and our Plagiarism Detector Review.

Does Copyleaks offer a free version for its Plagiarism Detector?

How reliable is Copyleaks AI detection?

Can Copyleaks detect all types of plagiarism?

What languages does this AI Content Detector support?

Does Copyleaks offer any customer support options?