5 of the Best AI Content Detectors

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By Boris Dzhingarov

As the world becomes more and more digital, the need for original content and the prevention of plagiarism has grown significantly – particularly for writers, publishers, and educators. The use of AI-powered content detectors has become a critical tool for many, especially with the rise of generative AI tools such as ChatGPT and Jasper.

There are many great AI content detectors available – and many offer a range of further features such as plagiarism detection and even content optimization tips to help you produce better content. Here are five of the best.


Originality.AI is one of the top-rated AI content detector tools available today. It leverages machine learning algorithms to perform a comprehensive analysis of content and claims to be able to detect content generated by GPT-3 and GPT-4. Along with providing a probability of whether the content has been generated by an AI tool, Originality.AI also serves as a plagiarism checker, allowing you to check for both in one quick scan.

This tool compares content against a vast database of sources to ensure originality. And it’s simple to use – just copy and paste some content into the editor and get a score in seconds. 

A word of warning – Originality.AI has a high accuracy level for recognizing AI-written content. However, during tests, it also mistakes human-written content for AI-written content often. So, it might not be reliable if you’re trying to figure out if content is written by a human or AI.

CrossPlag AI

Crossplag is a cutting-edge AI detector tool, claiming to detect AI-generated text with high accuracy levels. Like Originality.AI, it uses natural language processing and advanced machine learning to analyze the text and provide a score to indicate whether it’s human-written or AI-written.

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To do this, it examines unique features and patterns present in text generated by AI, and then generates a score based on this information.

A big advantage of this tool is that it’s easy to use. It offers an intuitive interface that allows users to easily upload text for analysis and get results within seconds. This makes it an excellent choice for both individuals and companies who need to scan large amounts of content for AI-generation quickly. Plus, it can analyze text in one hundred different languages.

Content at Scale

Content at Scale is an AI platform that’s best known for blogging, allowing you to utilize AI to write blog posts from start to finish. However, that’s not all you can use it for – one great feature is its AI content detector tool. Unlike other tools, Content at Scale’s AI detector tool is completely free of charge. All you need to do is copy and paste some text into the detector field, hit scan, and you’ll get a probability score.

While Content at Scale has been found to be quite accurate, it’s worth bearing in mind that it’s fairly easy to fool. Unlike other detector tools, you can completely change the score by changing a single character.


Another AI content platform designed for companies, Writer.com offers a wide range of tools to help you craft excellent, compelling content. However, like Content at Scale, that’s not all it offers – it’s also equipped with a robust AI text detector.

To use this tool, all you need to do is input the text into the analyzer text field either by copying and pasting or writing directly into it. Then click on ‘Analyze text’ and review your score. Along with detecting AI content, some other handy ways you can use Writer.com include using reporting tools to get valuable information and insights into writing trends and patterns, automating various aspects of your content strategy, and a style guide to help ensure your content is professional, consistent, and high-quality.

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CopyLeaks AI

CopyLeaks AI is an AI-powered plagiarism detector that you can also use to detect AI content. It can assess and detect AI-generated content across a range of natural language processing models such as GPT-3.5 and has an accuracy rate of 50%. Despite not being quite as accurate as some other tools out there, it can be handy to have both AI detection and plagiarism detection in one place.

Plus, you can access the AI content detector tool as a browser extension for Google Chrome, for handy access whenever you need it.

Are AI Content Detector Tools Worth Using?

AI content detector tools are worth adding to your toolbox for several reasons.

Firstly, many offer powerful and efficient plagiarism detection tools, which makes it easier for writers, publishers, and educators to ensure originality and maintain high standards of quality in their work. Manual plagiarism detection can be time-consuming, if not impossible due to the sheer amount of digital content available online. With many of these tools, a simple copy and paste will let you know if your content is matching up word-for-word with something already published.

Secondly, AI content detectors are becoming more sophisticated – many have high accuracy ratings when it comes to detecting AI content, which can be useful for both writers and those who purchase content. Whether you want to improve your own writing, or check that you’ve not been sold AI content, these tools can help.

And finally, many AI content detector tools offer much more. For writers, a tool that offers suggestions, guidelines, tips and more can be extremely valuable when it comes to improving your craft and getting better results from your content.

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On the downside, however, AI content detectors are not 100% accurate. One common theme is that while they tend to be very good at detecting content written by AI, many fail on detecting human-written content and are more likely to mistake human-written content for AI content. While this might improve in the future, it’s crucial to bear in mind that your AI detector tool score may not always be right. This is especially true when the text is written formally, for example, or where there are no spelling or grammatical mistakes present.

With AI-generated content taking off, it’s worth exploring these tools to help you detect if the content you’re reading has, in fact, been generated by a natural language processing model like GPT-3. However, while these tools have many benefits, it’s also important to keep in mind that they are not one hundred percent accurate and should not be solely relied upon.