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Top Free AI Content Detection Tools for Distinguishing Between Human and AI-generated Content

As AI-generated content becomes increasingly prevalent in various industries, it is important to distinguish between created by humans and created by machines. This is where AI content detection tools come in. These tools are designed to help identify AI-generated content and can be used in various contexts, such as plagiarism detection, content creation, and research.

In this article, we will discuss the top free AI content detection tools available to help you distinguish between human and AI-generated content.

Top Free AI Content Detection Tools

AI Text Classifier

The AI Text Classifier is a valuable tool for anyone interested in understanding and analyzing AI-generated content. As a fine-tuned GPT model, it uses a variety of sources to predict the likelihood that a piece of text was generated by AI, including ChatGPT. The classifier is available as a free tool and is intended to spark discussions on AI literacy. However, there are limitations to its accuracy. For instance, the classifier requires a minimum of 1,000 characters and can mislabel both AI-generated and human-written text. Additionally, AI-generated text can be edited easily to evade the classifier. Finally, the classifier may struggle with text written by children or text not in English, as it was primarily trained on English content written by adults. Nonetheless, the AI Text Classifier is an excellent starting point for analyzing AI-generated content, and anyone interested in AI literacy should try it out.


GPTZero is considered one of the best AI content detectors in the world. It has amassed over 1 million users since its launch and is continually growing. One of the benefits of GPTZero is its ability to evaluate a large number of text (up to 5,000 characters). The tool is also limited to checking 1 million words every month. There is a paid version of the tool, which offers additional features.


As a writer, learning from the AI Content Detector can help improve the quality of your work. By using the tool to check your content before publishing, you can ensure that it reads like it was written by a human and not solely produced by AI. This can help boost your content’s ranking on search engines and increase its overall readability. While the Writer app’s AI content detection is limited to 1,500 characters at a time, it is still a useful tool for identifying any potential issues in your writing. By taking advantage of this technology, you can become a better writer and produce content that resonates with your audience.


Originality.AI is a game-changer when it comes to detecting AI-generated content and paraphrasing. With its remarkable accuracy rate of 96%, it outperforms all of its competitors, which are often free tools. The secret to its success lies in the enormous amount of computing power it employs, which ensures precision and reliability. While it may not be a free tool, Originality.AI is an excellent investment for writers and content creators who want to protect their work and ensure its originality. Its specialized detection capabilities for ChatGPT, GPT-2, GPT-3, GPT-4, and Quillbot paraphrase make it a unique and valuable tool for the modern era of AI-generated content.

Content at Scale

Content at Scale is a powerful AI content detection tool that can identify whether any part of your content was generated by AI. It uses advanced NLP and semantic analysis to detect AI-generated text, including ChatGPT. While the tool can only check up to 400 words at a time and does not specify which AI model was used, it is an excellent resource for anyone looking to ensure the authenticity of their content. With Content at Scale, you can detect any robotic-sounding content and make necessary adjustments to improve the overall quality of your work.

GPT-2 Output Detector

GPT-2 Output Detector is one of the best AI content detectors available. However, it only recognizes content produced by GPT. The tool has a user-friendly interface and is free to use. While it may not be able to detect plagiarism, it is still a great tool to detect AI-generated content.


The Crossplag is another innovative tool designed to detect the origin of a given text, whether it was created by a human or an AI. By using machine learning algorithms and natural language processing techniques, the tool is trained to analyze the patterns and characteristics of both human-written and AI-generated content, providing an accurate rating score bar. It is a fast and easy-to-use tool that can help individuals and businesses identify and flag AI-generated content to ensure the authenticity of their work. The Crossplag AI Content Detector can detect up to 1,000 words of text for free, making it an accessible and valuable resource for anyone who wants to verify the authenticity of their content. With the rise of AI-generated content posing a threat to academic integrity and online content quality, the Crossplag provides an effective solution to ensure that the content being published is original and trustworthy. It is an essential tool for anyone who values the importance of authenticity and originality in their work.


In conclusion, the rise of AI-generated content has led to an increased need for reliable AI content detection tools. With the help of these tools, it is now possible to distinguish between content created by humans and content created by machines. The top free AI content detection tools mentioned in this article, such as AI Text Classifier, GPTZero, Writer, Originality.ai, Content at Scale, GPT-2 Output Detector, and Crossplag, offer unique features and benefits to help users detect AI-generated content.

However, it is important to note that these tools have their limitations, such as character limitations, language restrictions, and model recognition. Therefore, it is essential to choose the right tool based on your needs and requirements. It is also recommended to use multiple tools for more accurate and reliable results.

Also read: Boost Your Productivity with ChatGPT Extensions: The Ultimate Hack You Need!

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