13 Best AI Plagiarism Checker Tools to Detect ChatGPT Content

While AI chatbots, such as ChatGPT, have primarily been used for entertaining conversations, some individuals, including students, have utilized AI to generate and plagiarize text from legitimate websites for their school assignments.

Fortunately, there are now ways to detect AI-generated content and combat plagiarism with the help of AI-powered plagiarism checkers. These innovative tools can quickly identify instances of plagiarism in mere seconds.

If you are searching for reliable plagiarism checkers to use for ChatGPT and AI-generated content, you’ve come to the right place. In this article, we will explore the 12 best AI plagiarism checker tools available for use in 2023.

12 Best Ai Plagiarism Checker

OpenAI Text Classifier

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We begin with the release of a brand new AI plagiarism checker by OpenAI, the company that created ChatGPT. Known as the AI Text Classifier, this app is a well-crafted GPT model designed by the company. The classifier is responsible for determining the likelihood that a given text was written by a human or an AI.

The AI plagiarism checker has been trained using a set of data pairs, which includes inputs from both humans and AI. This makes it easy for the tool to identify plagiarized AI-generated text. The app is capable of processing all types of text and is accessible through the company’s website.

Although OpenAI has stated that the tool is not completely reliable yet and should not be solely relied upon to detect copied text, I conducted several tests by copying my own article from GeeksGyaan and several Wikipedia texts, and it was able to easily detect the human-written content. This is one of the best free AI plagiarism checkers available, but it requires a minimum input of 1,000 characters.

AI Detector Pro

AI Detector Pro

AI Detector Pro is a comprehensive platform designed to simplify the process of detecting AI-generated content produced by leading AI content generation tools. With this powerful platform, users can easily identify and scrutinize texts that exhibit clear indications of being generated by AI systems. Detailed reports are provided, presenting the specific text segments that demonstrate evidence of AI generation.

This allows users to delve deeper into the content and gain insights into its authenticity. Moreover, AI Detector Pro offers efficient project management capabilities, enabling users to organize and handle their AI generation reports seamlessly. In addition to its core functionalities, the platform also provides a range of supplementary tools and utilities, expanding users’ toolbox and enhancing their overall experience.

Content At Scale

AI Plagiarism Checker Tools

Content at Scale boasts extensive training on an enormous dataset comprising billions of pages, allowing it to predict the most likely word selections with a high degree of accuracy.

As one of the leading AI plagiarism detection tools, it sets itself apart by leveraging a proprietary content generator that taps into multiple layers of AI components. With this sophisticated approach, Content at Scale can analyze various forms of AI, including ChatGPT, to detect instances of plagiarized content.


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Plagibot is an AI-powered plagiarism checker that supports multiple file types, including Word files and PDFs, among others. The company has placed a strong emphasis on user-friendliness and designed the tool with an intuitive UI. Plagibot’s comprehensive database is continually updated, with the system scraping the web every hour for new information.

This AI-based text detection tool is highly effective at detecting plagiarism and identifying instances of copied content. However, during my usage, I did encounter some errors on the website. Fortunately, these issues were infrequent and did not significantly impact my experience.

It’s important to note that Plagibot is not a free tool, with the free tier limiting users to a monthly word count of 2,000. To access additional features and higher word limits, users must upgrade to a paid tier.


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One of the top AI plagiarism checkers, CopyScape operates differently from the other tools mentioned in this article. Rather than analyzing text inputs, CopyScape has the capability to scan entire web pages.

Essentially, CopyScape searches the internet for copies of your webpage and provides a list of web pages that have duplicated your content. Although primarily geared towards businesses to track whether their content has been plagiarized, the tool is accessible to individuals as well.

Using CopyScape is simple. You can just copy and paste the URL of a webpage into the tool, and it will take a minute or two to display Google-like results, with the copied content highlighted.

You can click on any of these results for detailed information, including exact word count and percentage of copied content. In general, the tool performs well in identifying AI-generated text.



GPTRadar is a fittingly named AI plagiarism checker that uses GPT-3 technology to detect various types of text online and classify them as either human or AI-generated.

The tool is available on a simple website that may seem too basic at first glance, but it performs its job well. I put the tool to the test by pasting both my articles and Lorem Ipsum text into it, and it returned some intriguing results.

The tool concluded that the “Lorem Ipsum” text was most likely generated by a large AI model. It also provided a perplexity score, which reflects the model’s ability to predict words.

Additionally, the AI plagiarism checker split the text into chunks based on whether it was human or AI-generated. Furthermore, the tool provided a wealth of information, such as token probability and distribution.

Corrector App AI Content Detector

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The AI plagiarism detector offered by the Corrector app stands out from the rest of the apps listed here, as it supports all the GPT models, including the latest GPT 4 model. Additionally, this AI text detection tool uses contextual cues to identify similarities in text inputs. As with other AI plagiarism detectors, Corrector can be used by anyone for a variety of needs.

However, some users may find the results generated by the tool to be somewhat unclear. Instead of providing detailed metrics, Corrector utilizes a “Fake %” meter to output its results.

When pasting content into the app, users receive percentage results, but are limited to a maximum of 300 words per input. On the plus side, Corrector refers to itself as “The Sherlock Holmes of AI detectors,” which is a pretty cool moniker.


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GPTZero is an AI-based plagiarism checker that comes highly recommended by many online users, and for good reason. This user-friendly tool is capable of analyzing text across multiple sources and employs statistical data to determine whether the text is generated by a human or machine. In addition, it utilizes an algorithm that examines other factors, such as perplexity and burstiness, in addition to originality.

My experience with GPTZero was generally positive, although there were a few moments of confusion. The tool was effective at distinguishing between human and AI-generated articles, although there were instances where it incorrectly identified original content as AI-written.

However, it’s important to note that these occurrences were infrequent. I found the tool’s metrics to be highly specific, which sets it apart from many other AI plagiarism checkers. Additionally, the tool is entirely free to use.

Copyleaks AI Content Detector

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Copyleaks boasts a remarkable 99.12% accuracy rate in identifying whether content has been created by humans or AI using its AI-powered plagiarism detector. The tool also supports multiple languages, including French, Spanish, German, and more.

Copyleaks adopts a “fight fire with fire” approach, utilizing AI to detect AI-generated text. This allows the tool to evolve and remain effective against the newest AI chatbots, making it a highly capable tool. Copyleaks has even pledged support for ChatGPT 4 when it becomes available.

You can utilize this AI plagiarism checker in a variety of scenarios, including articles, reviews, posts, and academic papers. To test it out, I copied text from an old GeeksGyaan article on smartphone addiction.

In under 10 seconds, the AI text detection tool analyzed over 600 words and gave me the green light, indicating the text was human-written. I repeated the test with several text excerpts and the tool consistently delivered accurate results.

Writer AI Content Detector

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The content detection tool from Writer AI functions similarly to other tools on the market. To use it, simply input your text, whether copied or self-generated, and click “Analyze.” However, please note that the tool is limited to 1,500 characters at a time.

For longer pieces of text, it’s necessary to divide them into smaller parts. Alternatively, users can input the URL of a web page, and the tool will extract the text automatically.

The Writer AI tool employs a percentage meter to determine whether content has been plagiarized. During my testing, I inputted a variety of text inputs, and the tool consistently distinguished between human and AI-generated content with ease. However, for those looking to detect AI-generated plagiarism on a larger scale, it’s necessary to contact Writer AI directly.

Writefull Gpt Detector


The GPT detector from Writefull is a cutting-edge AI tool that has gained popularity among online users for its ability to identify fake tweets. Trained on diverse datasets, the GPT detector is a user-friendly tool that effectively detects AI-generated texts. Its instant detection feature allows for real-time usage.

Furthermore, GPT Detector is committed to updating its existing model and adding support for GPT 4 in the near future. Although there is no paid subscription required, it is worth noting that Writefull has set an undisclosed daily usage quota. Despite this limitation, the GPT detector remains one of the top AI plagiarism checkers available today.

Crossplag AI Content Detector

Crossplag’s AI plagiarism checker is specifically designed to identify AI-generated text in students’ assignments. This advanced tool is capable of processing up to 1,000 words at a time, making it highly efficient and user-friendly.

The content detector is powered by a state-of-the-art RoBERTa model that has been fine-tuned using the Open AI dataset, giving it unparalleled accuracy and precision when it comes to detecting copied text.

Although the tool is currently in the testing phase, it is already proving to be incredibly fast and effective at identifying instances of plagiarism in academic writing.


Although Grammarly is primarily known for its grammar-checking capabilities, it also offers a handy plagiarism checker that is quick and easy to use. Powered by a combination of advanced AI technologies, including machine learning, deep learning, and natural language processing, Grammarly’s plagiarism checker is highly accurate and efficient at detecting copied text.

It’s important to note, however, that Grammarly’s detailed plagiarism statistics are only available to paying customers. The best features of the tool are locked behind a paywall, which means that users who opt for the free version can only see if the tool has detected plagiarism or not, without access to additional information or tools.

Upgrading to the Premium version for per month will give you access to more comprehensive plagiarism reports and other advanced features.


Plagiarism checkers can be useful in identifying instances of AI-generated content that may have been deliberately included in written work.

As AI-generated text becomes increasingly prevalent, these tools are likely to become essential for teachers and academics who need to ensure the integrity of student assignments and research papers. With the help of advanced AI text detection tools, detecting plagiarized or ChatGPT-written content will become more efficient and accurate.

Himangi is passionate about keeping up with the ever-evolving landscape of technology. In her free time, she indulges her interests in neuroscience and art.


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