7 Best AI Detection Tools Compared (2024 Review)

AI Detection Tools
AI Detection Tools

With the rise of AI-generated content, it’s becoming increasingly difficult to differentiate between human-written and AI-generated content. This is where AI detection tools come in handy. In this article, we’ll be discussing the best AI detection tools available to help you identify AI-generated content.

We have analyzed dozens of tools and selected the top 8 that stand out for their reliability, accuracy, and features. Whether you’re a serious content publisher or just looking to improve your content, our list has something for everyone.

1. Originality.ai

Originality.ai Interface
Originality.ai Interface

Originality.ai is an AI detection and plagiarism checker tool that is designed for serious content publishers. Our team has tested and analyzed over 20 AI detectors, and we can confidently say that Originality.ai is the best overall AI detector with an accuracy score of 93.3%.


  • AI detection: Originality.ai can detect AI-generated texts produced by several AI text generation models (including GPT-3, GPT-3.5 (DaVinci-003), and ChatGPT) with approximately 94% accuracy.
  • Plagiarism detection: You can simultaneously scan for plagiarism and AI with Originality.ai. The tool also highlights plagiarized content.
  • User-friendly interface: The interface of Originality.ai is intuitive and easy to use. You can quickly upload your content and get results in a matter of seconds.
  • Multiple file formats: Originality.ai supports various file formats, including doc, docx, txt, pdf, and more.
  • Customizable settings: You can customize the settings of Originality.ai to fit your specific needs. For example, you can adjust the sensitivity of the tool to detect more or fewer instances of AI-generated text.


  • Limited free plan: The free plan of Originality.ai only allows you to check up to 1000 words per month. If you need to check more, you will have to upgrade to a paid plan.
  • No integration with other tools: Originality.ai does not integrate with other writing tools such as Grammarly or Hemingway. You will have to copy and paste your content into the tool manually.

2. Undetectable.ai

Undetectable.ai Interface
Undetectable.ai Interface

Undetectable.ai is a powerful AI detection tool that combines 7+ AI detection models in one place.


  • Comprehensive features: Undetectable.ai combines several AI detection models, including plagiarism detection, readability analysis, and more, making it a comprehensive tool for detecting AI content.
  • Supports multiple languages: Undetectable.ai supports over 50+ languages, making it a versatile tool for detecting AI content in different languages.
  • Humanization feature: Undetectable.ai can also humanize AI-written content using different writing styles, such as marketing, essay, story, legal, report, and more. This feature can help make AI-generated content more readable and engaging.


  • Cost: Undetectable.ai is a paid tool, which may be a barrier for some users who are on a tight budget
  • Limited customization options: Undetectable.ai does not offer many customization options, such as adjusting the sensitivity of the plagiarism detection model.

Overall, Undetectable.ai is a powerful and free tool for detecting AI content. Its multiple AI detection models and support for multiple languages make it a versatile tool for detecting AI content.

3. Content at Scale

Content at Scale Interface
Content at Scale Interface

We found that Content at Scale is a great AI detection tool that is ideal for businesses and individuals who need to scan large amounts of content.


  • High Accuracy: Content at Scale uses advanced algorithms to analyze content and detect AI-generated text with high accuracy.
  • Large Scale Scanning: This tool is capable of scanning large amounts of content, making it ideal for businesses and individuals who need to detect AI-generated text on a large scale.
  • Customizable Scanning: Content at Scale allows users to customize their scanning settings based on their specific needs.


  • Expensive: Content at Scale is more expensive than some other AI detection tools on the market.
  • Limited Languages: This tool only supports a limited number of languages, which may be a drawback for some users.

Overall, we recommend Content at Scale for businesses and individuals who need to scan large amounts of content and require high accuracy in detecting AI-generated text.

4. Winston AI

Winston AI Interface
Winston AI Interface

Winston AI is an industry-leading AI content detection tool that uses cutting-edge technology to detect AI content generated with ChatGPT, GPT-4, Bard, and many other Large Language Models.


  • High Accuracy: Winston AI boasts a high accuracy rate, making it one of the most reliable AI detection tools on the market.
  • User-Friendly Interface: Winston AI is easy to use and navigate, even for those who are not familiar with AI technology.
  • Customizable Settings: Winston AI allows users to customize their detection settings to fit their specific needs.
  • Free Plan: Winston AI offers a free plan for users to test out the tool for up to 2,000 words.


  • Limited Integrations: Winston AI may not integrate with all types of software or platforms, which could limit its usefulness for some users.
  • Cost: While Winston AI offers a free plan, the full version can be expensive for some users.

Overall, Winston AI is a reliable and user-friendly AI detection tool that can help users detect AI-generated content with high accuracy.

5. Passed.ai

Passed.ai Interface
Passed.ai Interface

We found Passed.ai to be a comprehensive and user-friendly AI detection tool that offers a range of features for educators and content publishers.


  • Accurate AI detection: Passed.ai uses advanced algorithms to detect AI-generated content with high accuracy.
  • Plagiarism checker: The tool also offers a plagiarism checker that compares submitted content against a vast database of online sources.
  • Integration with Google Docs: Passed.ai integrates seamlessly with Google Docs, allowing users to check their content for AI and plagiarism without leaving the document.
  • Document audit: The tool provides a detailed audit of the submitted document, highlighting any potential issues with AI or plagiarism.
  • Replay tool: Passed.ai’s replay tool allows users to view previous versions of their document and track any changes made.


  • Limited free trial: The free trial only lasts for 5 days, which may not be enough time for users to fully evaluate the tool.
  • Limited integrations: While the tool integrates with Google Docs, it currently does not offer integrations with other popular platforms such as Microsoft Word or WordPress.

Overall, we found Passed.ai to be a powerful and reliable AI detection tool that offers a range of features for educators and content publishers. We believe that the tool’s accuracy and user-friendly interface make it a strong choice for anyone looking to detect AI-generated content and ensure academic integrity.

6. Copyleaks

Copyleaks Interface
Copyleaks Interface

We recommend Copyleaks as one of the best AI detection tools available. Copyleaks uses advanced AI algorithms to detect plagiarism in text documents, web pages, and more.


  • AI Content Detector: Copyleaks claims to be the only enterprise solution that keeps you informed about what content was written by a human or generated by AI, including GPT-4 and Bard.
  • Plagiarism Detector: The company’s plagiarism detection capability helps you identify potential plagiarism, detect AI-generated content, and more.
  • AI Model Coverage: Copyleaks can detect AI-generated text created across ChatGPT (including GPT-4), Bard, and others. Plus, once newer models come out, it can automatically detect them.
  • Accuracy: The Copyleaks AI Content Detector has been confirmed as one of the most accurate by third-party studies.


  • Pricing: Copyleaks charges per scan, which can be costly for large documents or frequent scans. However, they do offer a trial plan with limited features.
  • Interface: The user interface can be a bit overwhelming at first, but it’s easy to get the hang of after a few uses.

Overall, we recommend Copyleaks for those who are willing to invest in a comprehensive AI detection tool. While it may have a higher price point, the accuracy and coverage make it worth it for those who need to detect AI-generated content and potential plagiarism.

7. AI Detector Pro

AI Detector Pro Interface
AI Detector Pro Interface

We found AI Detector Pro to be a comprehensive and user-friendly platform for detecting AI-generated content.


  • Accuracy: AI Detector Pro analyzes the latest outputs from ChatGPT, GPT 3, GPT 4, and BARD every day, making it highly accurate in detecting AI-generated content.
  • Humanization: AI Detector Pro’s AI Eraser suggests alternative phrasings that skirt the realm of AI detection, helping users infuse their content with a human touch without compromising on the efficiency of AI-powered assistance.
  • Detailed Reports: AI Detector Pro provides detailed reports that show the probability that content was generated using AI, along with confidence levels. This makes it easy for users to make informed decisions about their content.


  • Pricing: AI Detector Pro is a premium tool, and its pricing may not be affordable for everyone.
  • Limited AI Tools: AI Detector Pro currently analyzes the latest outputs from ChatGPT, GPT 3, GPT 4, and BARD. While these are some of the most popular AI content generation tools, it may not be enough for those who need to detect content generated by other tools.

Overall, AI Detector Pro is a great tool for detecting AI-generated content, with its accuracy, humanization, and detailed reports making it a top choice for many users. However, its pricing and limited AI tool coverage may not be suitable for everyone.


After researching and evaluating various AI detection tools, we have identified several options that can effectively detect AI-generated content. These tools can be useful for educators, researchers, and content creators who want to ensure the authenticity and originality of their work.

Some of the top AI detection tools we found include Originality.ai, Undetectable.ai and Content at Scale. Each of these tools has unique features and capabilities, so it’s important to consider your specific needs when choosing the right one for you.

When evaluating AI detection tools, it’s important to look for features such as accuracy, speed, ease of use, and compatibility with different file types and platforms. Some tools also offer additional features such as plagiarism checking and content optimization.

Frequently Asked Questions

Which AI detection tool is best for teachers?

For teachers, the best AI detection tool would be Passed.ai, which is specifically designed for educational institutions. It offers advanced plagiarism detection capabilities and can detect traces of copied content.

Are AI detectors always 100% accurate?

No, AI detectors are not always 100% accurate. While they can detect similarities between texts, they may not always be able to distinguish between intentional and unintentional plagiarism. It is important to use AI detectors as a tool to aid in plagiarism detection, rather than relying solely on them.

Is there a free AI detection tool available?

Yes, there are several free AI detection tools available, including GPT-2 Output Detector, CrossPlag, and AI Text Classifier (OpenAI). However, it is important to note that free tools may have limitations in terms of accuracy and features.

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