Jun 6, 2024

Best AI Plagiarism Checker 2024: Reviewed

Vaishnavi Ramkumar
Best AI Plagiarism Checker 2024: Reviewed

Best AI Plagiarism Checker 2024: Reviewed

Ready to take your writing to the next level? Our top-rated AI plagiarism checker for 2024 is here to help. Check out our review now!
Best AI Plagiarism Checker 2024: Reviewed

Table of contents

These tools highlight instances of plagiarism and indicate whether a piece of content was crafted by a human or with the assistance of AI tools. In this blog, we have listed the best AI plagiarism checkers online, each capable of detecting AI content and identifying duplicate content.

Why Use a Plagiarism Checker?

AI plagiarism checkers can mitigate your risk of copyright violation and save time by detecting duplicate content on your site. Plagiarism checkers are pivotal for website owners, businesses, researchers, and professionals who wish to be safeguarded from online copyright infringement.

Here are some of the reasons to invest in a good AI plagiarism checker:

  • Plagiarism checkers can help to ensure that your written work is original and has not been copied from another source.
  • Using a plagiarism checker can help you avoid unintentional plagiarism, which can occur when you forget to properly cite or paraphrase information.
  • Plagiarism checkers can also provide peace of mind and confidence in your work by confirming that it is free of any instances of plagiarism.
  • Many institutions, such as schools and businesses, have strict policies against plagiarism and using a plagiarism checker can help you comply with these guidelines.
  • By detecting any potential instances of plagiarism, a plagiarism checker can also improve the overall quality and credibility of your writing.

Also Read: Best Plagiarism Checker For AI-Generated Content

Best AI Plagiarism Checkers of 2024

Numerous tools have emerged in response to the booming production of AI-generated content, each designed with specific capabilities to detect AI-generated content and check for plagiarism. Each tool uses a distinct method to analyze the text for plagiarism detection and AI-generated content identification to maintain the integrity of your content.


GPTZero stands out as one of the top AI Plagiarism Checkers in 2024. It is designed to help users verify the originality of their digital content. Based on AI algorithms, GPTZero checks if the content was written by a human or generated using an AI tool. One of the unique aspects of this tool is its ability to use statistical data to analyze text and perform calculations on metrics such as perplexity and burstiness. 

By offering real-time analysis and detailed feedback, GPTZero allows users to continuously improve the quality of their content. This tool is known for its accuracy in identifying content generated with AI, making it an indispensable feature in safeguarding digital integrity.

Key features:

  • Effective detection of AI-written content.
  • Constant evolution to match AI developments.
  • Real-time report and analysis



GPTRadar distinguishes itself as an AI plagiarism checker with advanced capabilities. Using GPT-3 Davinci, it investigates the origin of content by evaluating text and performing intricate calculations on metrics like perplexity and burstiness. The tool then provides a percentage for accuracy, which denotes the model's confidence concerning the result. GPTRadar’s feedback loop allows the team to continually enhance the model used for AI recognition, thus improving the accuracy of the users. While GPTRadar incurs a nominal cost based on credit tokens for use, its precision in distinguishing between human-written content and AI-generated content adds significant value.

Key features:

  • High-confidence results.
  • Regular improvement of the model for AI recognition.
  • Gives probability ratio of AI content


Originality AI plagiarism checker 

Originality.AI offered a two-in-one solution: a plagiarism checker and an AI detector. The tool determines if the scanned text was written with an AI tool, making it beneficial for web publishers, content agencies, and website buyers. 

Originality.AI helps keep the content of an entire website original and monitors team activities for plagiarism cases. Notably, it can detect content written with ChatGPT and GPT 3.5 (DaVinci-003) with the same accuracy as GPT-3. Additionally, APIs offered by Originally. AI integrate AI detection into your content creation workflow or a custom tool for ease of use.

Key features:

  • Detects whether the content was written by an AI tool.
  • Supports content from ChatGPT and GPT 3.5.
  • Can monitor an entire website for originality.
  • Provides APIs for easy integration into workflows.

Winston AI

Winston AI plagiarism checker

Winston AI, designed for publishing and education, stands out with its powerful AI content detection. Analyzing pieces of content, it identifies with 94% accuracy whether an artificial intelligence or a human created the text. Also, it can detect if the text was written using ChatGPT and offers plagiarism detection. Winston AI is tailored for those working in the fields of education, marketing, and content creation.

Key features:

  • High accuracy AI content detection.
  • Detects content written using ChatGPT.
  • Offers plagiarism detection.


ZeroGPT Ai plagiarism checker

ZeroGPT, a free and reliable tool to detect AI plagiarism, uses advanced technology for deep analysis of texts. It can identify text written by various AI chatbots, including ChatGPT and Google BARD. Adopted by many educational and professional institutions, ZeroGPT plays a key role in ensuring content authenticity. The tool provides an in-depth report of the content, enabling users to make informed decisions on the originality of their content.

Key features:

  • Deep analysis of the origin of any text.
  • Reliable detection of AI plagiarism.
  • Widely used by educational and professional institutions.

QuillBot AI Plagiarism Checker

Quillbot plagiarism checker

QuillBot's AI Plagiarism Checker is a powerful tool that can help ensure your work is original and free from plagiarism. By using advanced algorithms, QuillBot scans your text and compares it to a vast database of sources to identify any instances of duplicate content. This can be incredibly useful for students, writers, and businesses looking to maintain the integrity of their work.

Key features:

  • Real-time report and analysis
  • Detects over 100+ languages
  • Quotes missing citations  


Copyleaks plagiarism checker

CopyLeaks has developed its AI Content Detector with a significant focus on accuracy. This tool claims a 99.12% accuracy rate for detecting whether content was written with AI. It is highly beneficial in industries like SEO, academia, publishing, and reviews. You can use CopyLeaks online by uploading and scanning text, or download their Google Chrome extension to check your import posts and news articles.

Key features:

  • High accuracy for detecting AI-generated content.
  • Works across various industries.
  • Offers online and Chrome extension options for user convenience.


Copyscape AI plagiarism checker 

Copyscape, a popular AI plagiarism checker, takes a slightly different approach by scanning entire web pages rather than specific text inputs. This circumvents the need to paste or input text, but just to copy and paste the URL of a web page into Copyscape. It then inspects the page for instances of plagiarism, making it an efficient tool for businesses looking to protect their digital content from being plagiarized.

Key features:

  • Scans entire web pages rather than specific text.
  • Identifies copied content from the original source.
  • Ideally suited for businesses to protect their online content.

Also Read: Scalenut x Copyscape: How to check Plagiarism?

Writefull GPT Detector

Writefull Plagiarism checker

Writefull's GPT detector uses several ways to detect AI-generated content. It leverages software that analyzes various features of the text, such as language use, particular formatting or structure, and keyword repetition. With each scan, it provides a clear, comprehensive, interactive similarity report. This useful paraphrasing tool based on AI and Natural Language Processing rewrites text without changing its original meaning. It supports multiple languages and offers:

  • Advanced algorithms for rewriting text.
  • Multiple writing modes for user convenience.
  • Compatibility with all operating systems and devices.
  • 24/7 customer support through a chat box.


Grammarly plagiarism checker

Grammarly, a well-established tool for checking grammar, also doubles as an effective AI plagiarism checker. Its built-in anti-virus and other security measures inspect every software or tool to ensure its authenticity. The in-built similarity detector points out the instances of plagiarism, ensuring that your content is absolutely original. Its robust machine learning and deep natural language processing ability can scan and detect potential plagiarism in over 100 languages. Grammarly offers a clear report of identified similar text and similarity percentage, thus working as a robust shield against plagiarized content.

Key features:

  • Effective grammar checker with built-in plagiarism detection.
  • Robust machine learning and natural language processing ability.
  • Compatibility with different languages.
  • Provides clear plagiarism reports.

Also Read: Scalenut vs Writecream

Features to Consider while Choosing an AI Plagiarism Checker

The right AI Plagiarism Checker is crucial for safeguarding your content. Key features to look out for include AI-Generated Content Detection Capability, which determines if the content was created using AI tools. Comprehensive Coverage of Sources ensures that the tool cross-checks your content against a wide range of online sources. Support for multiple languages widens the checker's usability across different language content. An easy interface allows seamless use and integration into existing systems and workflows. These features ensure better content quality, fewer instances of plagiarism, and enhanced SEO benefits.

AI-Generated Content Detection Capability

The AI-generated content detection capability of an AI plagiarism checker is determined by its ability to analyze content and verify its origin. This capability is crucial in the age of AI, where content generated by AI tools like GPT-3 and GPT-4 is often used. Checkers with a high AI-generated content detection capability can accurately differentiate between human and AI-generated content, giving users confidence in the originality and authenticity of their content.

Comprehensive Coverage of Sources

An essential aspect of an effective AI Plagiarism Checker is its comprehensive coverage of sources. This feature refers to the tool's ability to scan a wide range of online sources for potential plagiarism. The wider the checker's source coverage, the more efficient it is in identifying content that may have been copied or influenced by previous publications. Tools with comprehensive source coverage protect users from inadvertent plagiarism and uphold the integrity of their content. These tools conduct extensive checks across articles, blogs, academic papers, and other forms of content available on the internet to maintain the originality of your work.

Multiple Language Support

Support for multiple languages is another crucial feature to consider when choosing an AI Plagiarism Checker. This feature extends the scrutiny of the checker across content written in different languages, expanding the usability and relevance of such tools to non-English writers and content creators. It is important to pick a checker that supports a broad spectrum of languages to ensure effectiveness and inclusivity. Consider these vital parameters:

  • Checkers that accommodate a multitude of languages.
  • Tools that maintain the same level of accuracy across different languages.
  • Local dialects and language variants should also be included.

Ease of Use and Integration

Lastly, ease of use and integration play key roles in selecting an AI plagiarism checker. These checkers should be user-friendly and intuitive, making it easy for users to upload documents, check for plagiarism, and receive comprehensive reports. Further, the ability to integrate these tools seamlessly into existing systems and workflows enhances their utility and adoption. Whether it is integrating with platforms like Google Docs or LMS for academic integrity or providing APIs for custom integration into corporate workflows, these features significantly contribute to simplifying the process of detecting and preventing plagiarism.


Advancements in AI have significantly influenced content creation, bringing along the need for effective tools to ensure the originality and authenticity of the generated content. AI Plagiarism Checkers serve as essential resources for maintaining the integrity of digital content in academics, businesses, and research institutions. These tools bring about a defensive line against plagiarism, supporting the credibility of the work done by professionals and students in numerous fields.

Choosing the right AI Plagiarism Checker is of immense importance, taking into consideration critical features such as AI-generated content detection capability, comprehensive coverage of sources, multiple language support, and ease of use and integration. Using these tools helps protect original content and verify online content strategies for accuracy.

Frequently Asked Questions

How effective are AI plagiarism checkers in detecting plagiarized content?

AI plagiarism checkers are designed to detect instances of plagiarism effectively. With robust algorithms and extensive coverage of sources, these tools can identify similar or identical content across the internet, providing a detailed plagiarism report with a high degree of accuracy.

Can AI-powered plagiarism checkers detect content generated by other AI tools?

Yes, many advanced AI-powered plagiarism checkers can detect content generated by other AI tools. They analyze text for patterns, language use, and other specific features that differentiate AI-generated content from human-written content.

Are there any free AI plagiarism checkers available?

Yes, several AI plagiarism checkers like GPTZero, ZeroGPT, and Writefull GPT Detector, offer free versions. However, please note that the scope of functionalities in free versions might be limited when compared to their premium counterparts.

How can I avoid plagiarism in my content?

To avoid plagiarism, ensure you paraphrase or summarise information from your sources and appropriately credit the original source with correct citation. Using a reputable AI plagiarism checker can also help you identify and rectify any unintentional instances of plagiarism in your content.

How AI Plagiarism Checkers Detect AI-Generated Content?

AI plagiarism checkers employ advanced algorithms that can analyze text for patterns and linguistic features unique to AI-generated content. By comparing the text against a vast database of known AI-generated content, these tools can detect anomalies and discrepancies that suggest content may have been generated by AI. 

In an evolving digital landscape where AI-generated content is proliferating, the importance of verifying the authenticity of content has been accentuated. As businesses, institutions, digital marketers, and SEO professionals rely heavily on original content, AI Plagiarism Checkers play a pivotal role in maintaining the integrity of digital content.

Vaishnavi Ramkumar
Content Marketer
ABout the AUTHOR
Vaishnavi Ramkumar
Content Marketer

Vaishnavi Ramkumar is a content marketer specializing in creating BOFU content for SaaS brands. She believes reader-centric content is the sure-shot way to generate high-quality leads through content marketing. As part of the Scalenut team, Vaishnavi curates content that drives brand awareness and boosts signups. When she's not crafting content, you can find her immersed in the pages of a good book or a course.

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