9 Best Free & Paid AI Content Detector Tools

best ai content detector tools

Do you also have a piece of content and want to check whether it is AI-generated or human-written? 

Artificial Intelligence is growing exceptionally after the buzz of ChatGPT, Google Bard, and other tools. These AI content generation tools have made content creation easier, and it has become almost impossible for us to manually see any difference between AI-generated and human-written content.

Google can easily detect this difference and penalize your website for using AI-generated content due to several factors missing in the content. But for a human, it’s tough to understand the difference.

Moreover, engaging content generates more leads and sales whereas AI-written content lacks creativity and personalization.

That’s where these AI content detector tools become handy. You can easily grab the difference between AI content and human content with AI content detection tools. 

Best AI Content Detector Tools 2023 (Free & Paid)

Numerous fake AI detector tools over the internet produce false results.

Thus, this guide consists of the top AI content detector tools (both free and paid) that can help you detect the originality of the content in just a single click.

Let’s begin the list of AI content detection tools. 

1. Winston AI – Paid AI Content Detector Tool

Winston AI is one of the best AI content detector and plagiarism checker tools for educators, digital marketers, and content creators.

best ai content detector tool

The AI tool is associated with Optical Character Recognition (OCR) technology, allowing it to understand the difference between AI-generated and human-written texts.

Winston checks the content just like Google and saves your website from any other penalty in the future. 

Winston AI can easily identify the text generated from any AI content generation tool, including ChatGPT, Jasper.ai, RYTR, and Copy.ai, with 99% accuracy.

When I tried to check the ChatGPT-generated content through this tool, it left no space for artificial origination texts. Thus, this tool always works at a very high pace, but it also doesn’t provide 100% results due to the length and complexity of the content. 


  • It has an easy-to-use interface. 
  • To access the free trial, you don’t need a credit card. 
  • Friendly chat and email support. 
  • Generate the results within seconds. 


  • Doesn’t highlight the AI-generated content. 
  • Doesn’t show any comparison. 
  • Chrome extension is not available. 

Pricing – 

Winston AI offers four plans: Free, Growth, Enterprise, and Platinum. In the Free plan, you get a free trial for 7 days with a limit of 2000 words scan. You cannot use the Plagiarism checker in the free trial. The premium plans offer a higher monthly word limit. 

  • Growth: It charges $18 for scanning 80,000 words. Only a single user can access this plan.  
  • Enterprise: It charges $29 for scanning 200,000 words. Unlimited users can access this plan. 
  • Platinum: It charges $49 for scanning 500,000 words. Unlimited users can access this plan.

2. Originality.AI – Paid AI Content Checker Tool

Originality.AI is a great AI detector and plagiarism checker for bloggers, educators, students, journalists, web designers, and website flippers.

ai writing detector tool

This tool can even accurately identify the ChatGPT-4 generated content with almost 100% accuracy.

The tool features unlimited team members, checks the entire website by pasting URLs, and even integrates into your workflow. 

ai accuracy test

In an AI Detection Accuracy Test conducted by the Originality.AI team, 1200 mixed AI written and human written samples were tested by various popular AI content detector tools, including Originality.AI, OpenAI Text Classifier, GPTZero.me, CopyLeaks.com, and Writer.com.

The Originality.AI has achieved 96% accuracy, while the runner-up tool has only a 35% accuracy rate. Thus, it is an AI writing content detector with the most accurate results. 


  • Easiest interface. 
  • Convenient pricing model. 
  • Offers Chrome Extension 
  • The only tool to check the ChatGPT 3.5 written content. 


  • Doesn’t show in-depth results. 
  • It doesn’t offer any free trial. 


Originality.AI is a paid tool and works over the concept of credits. Simply put, 1 credit allows you to scan 100 words for plagiarism or AI-written content. You just have to buy the required credits here to use the platform. Credits can be purchased in the following way: 

  • $20: You get 2,000 credits; check 200,000 words. 
  • $50: You get 5,000 credits; check 500,000 words.
  • $100: You get 10,000 credits, check 1,000,000 words.
  • $250: You get 25,000 credits, check 2,500,000 words.
  • $500: You get 50,000 credits, check 5,000,000 words.

3. Content at Scale 

Content at Scale is an AI-based writing tool, but it also works well as amongst the best AI content detector tools for free and features a Copyscape plagiarism checker.

ai content detector tools

It works over billions of pages of data to accurately detect and predict the AI tools generated content, including ChatGPT-4. This tool is befitting for SEO, educational, marketing, and academic content. 

The tool analyzes and measures the content concerning human-like content at a scale of 100%. This score breaks down into predictability, probability, and patterns and allows you to detect if any portion of the content is written by an AI tool. Plus, it also shows you the chances of your content getting ranked.


  • Shows the percentage of human touch in the article. 
  • Highlight the AI-generated content sentences so that you can fix them right away. 
  • Extremely simple UI/UX. 
  • Detect the AI content free of any charge. 


  • Starter pricing is a little expensive. 
  • Sometimes, these AI content detector tools work buggy. 


Content at Scale offers four basic plans: Solo, Starter, Scaling, and Agency. This tool is basically for creating lengthy blog post content. But, detecting AI content is free of cost. 

4. AI Detector Pro – GPT Detection Tool

AI Detector Pro is one of the most accurate AI-generated content detection tools. It’s a tool that quickly catches the generative content of all the top-notch OpenAI tools, including ChatGPT, GPT3, GPT4, and BARD.

chatgpt content detector tool

You can also try out the free version of the detection tool. AI Detector Pro is so confident regarding its content detection service that they claim a money-back guarantee scheme if the user finds a better content detection tool within 30 days of signing up.

The best thing about this platform is that it correctly highlights the AI-generated content and separates the original content. Simply put, you will get an accurate detection report just by pasting the content or filling in the website URL. You will gain all the essential insights to make the decisions properly regarding your content.


  • It provides 30 extra tools and utilities, including a website status checker, WHOIS lookup, and SSL checker.
  • AI Detector Pro brings out regular updates based on the latest OpenAI updates. Thus, it assures us to detect AI-suspicious content more accurately.
  • They only offer three reports per month for the Free plan.


  • To benefit from a money-back guarantee offer, you need to show them ten actual fallback incidents of the AI Detector Pro tool.
  • AI Detector Pro doesn’t support any language other than English.


AI Detector Pro has a FREE plan with some limitations. But you can also go for their BASIC and UNLIMITED plan.

5. GPTZero (Free Tool, No Signups Needed)

GPTZero is a free AI-generated content detector tool with amazing prediction capabilities. This tool accepts any file directly from your laptop and checks the content.

free ai content checker tool

You don’t even need to sign-up to access this platform. Moreover, GPTZero offers the API to scale your work, especially if you are an organization. 

This tool works over two main factors: Perplexity and Burstiness.

Perplexity works over a randomness matrix and shows you a number. Lower numbers (close to 10) represent the chances of content being AI-generated, and higher numbers (close to 100) represent the chances of content being written by humans.

Burstiness figures out the sentence patterns and uniformity and looks for the differences between human-written sentences and AI-generated sentences in your article. 

When I tested ChatGPT-generated and self-written content over this detector, it showed an accurate difference between AI-generated and human-written content. Though it shows the prediction in a general statement, it predicts right to some extent. Simply put, it will surely give you an idea of whether the content is AI-generated. 


  • Highlight each AI-generated sentence to detect the content easily. 
  • Free to use up to 5000 characters. 
  • No need to sign-up to detect the content.


  • Produces false statements sometimes, just like other writing detectors of AI content. 
  • Lacks various features in comparison to other tools. 


GPTZero doesn’t have any specific pricing model. You can contact their sales team to decide on your customized plan. 

6. Sapling 

Sapling is another AI content detector tool that helps in checking grammar and punctuation and also rewriting sentences.

paid ai content detection tool

It is a great tool to identify any content written by ChatGPT, ChatGPT-3, ChatGPT-3.5, and ChaatGPT-4. Here, you can check around 2000 characters for free without any login. 

The tool provides the real percentage of AI-generated content and even highlights it with red, which helps you better detect the content with any AI interventions.

You can even integrate this tool with various third-party software, including Slack, Mailchimp, Microsoft 365, Dischord, LinkedIn, etc. This feature allows you to advance your detecting method and improve your work efficiency. Thus, these features make it the best platform for editors and professionals. 


  • Offer generous free plans with effective detection capabilities. 
  • Provides Chrome and docs extensions to make your work more effective. 
  • Extremely simple interface for beginners. 
  • Supports various web applications, including Zendesk, salesforce, Gmail, etc.


  • Sometimes, it fails to identify the ChatGPT written content. 
  • Lacks in checking plagiarism. 


Sapling has a FREE plan that works perfectly as an AI content detector tool. To push the limits, you can also try out its PRO and ENTERPRISE plan. 

  • FREE: It charges $0/month and allows you to integrate with Chrome, Docs, Outlook, and Word. 
  • PRO: This plan has several additional benefits. You can also have a 30-day free trial here without requiring any credit card.
  • ENTERPRISE: To access this plan, contact their team and decide on customized pricing.

7. GLTR (Giant Model Test Room) – AI Content Detection Free Tool

GLTR is one of the best and most free AI content detector tools to generate reliable results.

This tool utilizes the forensic inspection of various elements of language model text to identify a difference between human-written and AI-generated texts.

GLTR doesn’t have many fancy features. Instead, this detection tool comes up with a simple interface. Though it shows the results in a complicated histogram, it makes interpreting the results a little tough. 

According to Harvard University, GLTR has improved the AI detection rate from 54% to 72% without any given training.

The tool has GPT-2 as its language model, allowing it to accept input and predict results. To simplify the detection process, GLTR uses color coding over all the words based on ranking position. Green represents the top 10, yellow represents the top 100, red represents the top 1000 ranked words, and purple represents the rest of the ranked words. 

However, it might look a little complex before you understand it properly. 

Let’s understand with the example of the given images below: 

Human-Written Content 

free ai content detection tool
Picture Credit: GLTR

The red and purple colors appear several times and show that it consists of surprising words that indicate the content is human-written. The first histogram shows the color coding, the Second shows the probability ratio, and the Third histogram shows the entropy distribution. Simply put, the uncertainties represent the human written content. 

AI Generated Content 

ai content detection tool test
Picture Credit: GLTR 

The content is filled with only green and yellow color coding with lesser uncertainties, indicating that it is probably AI-generated. 


  • One of the free AI content detector tools to use. 
  • Features simple copy and paste method. 
  • Features simple visuals to understand the human-written and artificial intelligence-generated texts statistically.  


  • It is a little difficult for some users to interpret the results. 
  • It works up to the 2019 GPT-2 model, which leaves a behind in the race. 


GLTR is completely free to use. 

8. ZeroGPT – Free AI Writing Detector Tool

ZeroGPT is one of the most advanced and reliable AI content detector tools. The tool comes up with a very simple UI/UX.

free ai content writing checker tool

It utilizes the DeepAnalyse technology to determine if the content is generated by any AI tool, including ChatGPT, Google Bard, or human writing.

ZeroGPT comes up with the claim of 98% accuracy and is helpful for students, educators, writers, and copywriters. 

Moreover, the ZeroGPT AI detection tool has a multilingual feature that allows users to detect the content of multiple languages.

Thus, it helps global marketers to keep their communication active and engaged. This AI content detector is presented by the best artificial text generator ChatGPT.

ZeroGPT has been vetted with the basic difference between artificial and human-written content. As ChatGPT is mastering the content generation skill, it often becomes difficult for ZeroGPT to figure out the content. 


  • It has 98% accuracy. 
  • It is a very simple interface as you just need to copy and paste the content. 
  • Proper care of your security and do not save your content in their database to further develop their AI bot. 


  • It doesn’t come up with editing or proofreading features. 
  • Often produces false results. 

Price – 

ZeroGPT is a completely free version to detect the content of any artificial intelligence interventions. 

9. Writer 

Writer.com is an AI content generation platform with a free AI content detector that checks up to 1500 characters.

ai content detection tool

The tool uses artificial intelligence and machine learning to scan the content and compare it with the database of other sources, such as academic papers, websites, and other sources. It simply tries to match the phrases, sentences, and paragraphs to find the sources. 

You can check the content either directly by pasting the URL or the content in the space. Writer.com detects even ChatGPT-generated content very well.

To unlock more capabilities, you just require an API. I didn’t find a good accuracy rate when I used this tool. However, it has allowed me to feel whether the content is AI-generated. 


  • Allows an extension to attach with Chrome, Docs, Edge, and Word. 
  • Detects 1500 characters for free. 
  • Shows the best possible results within seconds. 


  • Unable to detect plagiarism. 
  • Several times, it shows false results. 


Writer.com is basically for creating content in various niches. The AI writing detector of this tool allows you to check 1500 characters for free. You can also increase this limit by selecting the plans mentioned below. 

  • Team: It charges $18/month and allows 1-5 users to access the platform simultaneously. 
  • Enterprise: To access this plan for more team members, you must talk to their sales department. 

Wrapping Up Best AI Content Detection Tools

We hope you like the above-mentioned AI content detector tools guide and find the best required for yourself. The tools will help you to easily differentiate between AI-generated and human-written content. You can use any AI tool to detect your content and save your website from any Google penalty.

Did we miss any other important AI content detector tool? Do let us know in the comment section below.



TechyOceans is a tech community blog for tech lovers. The objective of the blog is to educate users with the latest technology.

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