Top 9 Free AI Content Detector Tools in 2024

Top 9 Free AI Content Detector Tools in 2024-feature image
May 29, 2023 10 Min read

Summary: Discover the top free AI content detection tools for detecting and preventing AI-generated content. Protect the authenticity of your work with complex algorithms that detect linguistic patterns, tone, and style, ensuring that your content is legitimate and free of plagiarism.

There is no denying that AI technology is playing a huge role in content creation. But Google has always been quite particular about good-quality, relevant content, and it has started to penalize websites that upload poor quality and automated content. So, it is necessary to publish only the original content on your website.

Thankfully, there are several AI content detector tools to help you stay ahead in the game. We have compiled a list of 9 free AI Content Detector Tools to help your digital content space. But don’t worry, we will not sound like an AI; instead, we will give you real-world advice to help your content stand out in the digital space.

What Is an AI Content Detector?

An AI content detector is a tool that can find if your content is written by a human or by any fancy AI tool. It uses natural language processing and machine learning techniques to compare your text against millions of other sources available online. So, if you’re worried about AI written content, the popular content detector tools can save your bacon.

Top 9 Free AI Content Detector Tools

  1. Writer

Writer AI Content Detector

Writer is one of the most used free AI detector tools on the internet. With advanced algorithms and detection capabilities, Writer tops our list. Writer tool has an incredibly straightforward interface; all you have to do is paste your text (up to 1500 characters at a time) and analyze it.

The software will let you know the percentage of human-written content. Once that is complete, you may choose whether or not to make modifications before posting your blog online.

Features of Writer

  • You just have to add URL to detect AI generated content throughout the website.
  • Easy integration through Writer’s AI Detector API.

Writer Pros and Cons

  • You do not need to sign up to use the free version
  • You can add its extension to Chrome, Word, Edge, and Docs for easy access
  • 1500 Characters (300 words) limit
  • Only accessible through the API or as a free tool

Writer Pricing: Writer’s price starts at $18/month.

  1. Kazan

With the company’s current focus on SEO (Search Engine Optimization), Kazan SEO is a great tool for SEO optimization and AI content detection. The website claims to have started as an SEO content optimizer and has now upgraded to offer a variety of AI and SEO features, including AI content detection.

Kazen Features

  • Free and open-source model
  • Comes with various SEO optimization tools
  • Packed with the latest GPT detection algorithms

Kazen Pros and Cons

  • Free and unlimited to use
  • Unlimited text detection
  • Quick results and analysis
  • Low accuracy in comparison to other tools
  • Lacks plagiarism detection tool

Pricing: Kazan SEO is a free AI content detector.

  • Copyleaks


If we talk about AI content detection tools, how can we forget Copyleaks? This AI content detector has the ability to detect AI-driven content generated through GPT3, ChatGPT, and even the latest GPT4.

Plus, Copyleaks provides an AI Grader to evaluate academic work and test grading, as well as a convenient plagiarism checker to look for duplicate content.

Copyleaks Features

  • Covers each and every AI Model, Including ChatGPT4
  • Shows particular parts of text written by humans and AI
  • Increases the level of content protection for your company with API integration
  • Exceptional speed and accuracy (99.12%)

Copyleaks Pros and Cons

  • It comes with a Chrome extension for better accessibility
  • Detects content in 15+ languages
  • In-depth and detailed output
  • The only con is its expensive pricing for individual users

Pricing: Copyleaks’ pricing starts at $9 for 1200 credits, and each credit scans 250 words.

  1. Content at Scale

Content at Scale ai content detection

Similar to Writer, Content at Scale is also a free to use AI content detector tool that shows the percentage of text that is written by AI. Content at Scale has been trained by billions of pages of data and has a higher probability for AI detection.

So, if your content has any sort of AI generated text, Content at Scale will sniff it out like a bloodhound.

Content at Scale Features

  • Works for both marketing and academic content
  • Uses a combination of NLP, semantic analysis, and three different AI engines to find AI generated content
  • Ensures a higher level of intelligence than generic AI algorithms
  • Covers all AI models and GPT4

Content at Scale Features Pros and Cons

  • No need to create an account to check AI generated content, simply visit the website and paste the content you want to check
  • Created by and for SEO professionals
  • It tells which part of your content is generated by AI
  • Can only check 300-400 words at a time
  • Does not specify which AI model is used

Pricing: Content at Scale AI detector is free to use.

  1. Originality AI

originality ai text detector

Originality AI is claimed to be one of the best AI content detector tools in the market. It uses natural language processing (NLP) technology to detect patterns in text and identify any instances of AI plagiarism.

Originality AI uses advanced AI models that have been tested with over 1200 data samples resulting in an impressive accuracy rate of 96%. This ensures that the work is completely original before publishing it online or submitting it for review.

Originality AI Features

  • GPT-4 content is 99%+ correct. 94.5% correct for Paraphrased Content, and 83% correct for ChatGPT content.
  • You can integrate Originality AI into your content creation workflow with an easy API.
  • The most precise AI (Works with Chat GPT, GPT-2, GPT-3, GPT-4, Bard)
  • Also, gives a rating on a scale of 0 to 100 for the likelihood of AI content.

Pros and Cons of Originality AI

  • Comes with a plagiarism detector to check copied content
  • Insert a URL & the site will be scanned for AI-produced content
  • Chrome extension that works with Email, Google Docs, WordPress, and websites
  • The only drawback is high pricing for individual users

Pricing: Originality AI costs $0.01 per credit, and 1 credit scans 100 words.

  1. GPT- 2 Output Detector

GPT-2 Output Detector is one of the most advanced and easy-to-handle AI detection tools online. It works on a GPT model, and the output detector reads both real text and GPT-2 produced text. Simply paste the text, and it will calculate the percentage of fake and real Content.

GPT-2 Output Detector Features

  • Built on the Transformers library NLP and RoBERTa algorithms.
  • Detects authenticity and filters out fake text

GPT-2 Output Detector Pros and Cons

  • Free to use
  • Detects GPT-generated Content easily
  • Simple and easy-to-use UI
  • Does not detect plagiarism
  • Results are not correct every time

Pricing: GPT-2 Output Detector is a free AI content detector and is available for everyone.

  1. Crossplag

Crossplag ai writing detector

Crossplag also uses Natural Language Processing (NLP) and advanced algorithms to read AI content. This tool works after scanning a vast dataset of text that was generated by humans and artificial intelligence.

It generates the output in colour format as green (original Content) and red (suspiciously AI Content), making it simple to identify potential issues at a glance. This tool offers reasonable accuracy rates that will allow you to maintain content hygiene.

Crossplag Features

  • Works on NLP, OpenAI Dataset, and RoBERTa model
  • Fast, accurate, and easy to use
  • Works with Google’s latest content rule update
  • Trained with over 1.5 billion variables for accurate results

Crossplag Pros and Cons

  • Easy to understand AI content scoring
  • Plagiarism detector with Crossplag AI detection
  • Different pricing options, for individuals, enterprises, and more
  • Supports more than 100 languages
  • Does not scan domains and URLs
  • Pricing can be an issue for individual users

Pricing: Crossplag pricing starts at $9.99 to scan up to 5000 words.

  1. GLTR

GLTR, or Giant Language Model Test Room, is an innovative tool created with the help of GPT2. It was developed by a team of experts from Harvard NLP and MIT-IBM. With its baseline statistical methods, GLTR can accurately detect generation errors in Content.

Its simple yet powerful interface uses natural language processing (NLP) algorithms to help you identify AI-generated Content.

GLTR Features

  • Based on the integration of the GPT-2 and 117M language model designed by OpenAI.
  • Easy to spot patterns that highlight AI generated text.

Pros and Cons of GLTR

  • Free to use for all
  • Results with high accuracy
  • Provides results in graphic visuals
  • Tool language can be overwhelming for non-techies
  • Does not work well with the latest AI
  • The user interface may be better

Pricing: Free to use AI content detector tool

  1. Sapling

Sapling detect ai generated text

Sapling is another AI detection tool that can quickly determine whether any content is written by a human or by GPT. Unlike other content detection tools, Sapling requires a smaller word count (50 words) to detect AI-produced content.

AI-generated content is highlighted in red, and an overall percentage of fake texts is provided. Developed by esteemed researchers from Berkeley, Google, and Stanford, Sapling is constantly evolving to improve its AI detection capabilities.

Sapling Features

  • Detects content generated by GPT-3 and ChatGPT
  • Grammar, spelling, and punctuation check
  • Provides reports and statistics of AI-generated content

Sapling Pros and Cons

  • Google Chrome and Docs extensions and add-ons
  • Frequent updates
  • Familiar with the newest AI models
  • Beginner-friendly UI
  • It is basically a ChatGPT detector
  • Does not have a plagiarism checker

Pricing: Sapling AI pricing starts at $25 per month

How Do AI Content Detection Tools Work?

It is all about machine learning. These programs are trained on vast amounts of datasets, allowing AI content detector tools to recognize patterns and make predictions based on that data. Using that pattern, then, these tools determine if a human created the content.

Additionally, AI can quickly assess all the information on the internet for a certain subject topic. This enables it to determine if the content created is real.

How Accurate are AI Content Detection Tools?

Many AI detector tools claim that they are quite accurate in detecting AI content. They use cutting-edge algorithms to detect texts that might be AI generated. And they do a shockingly decent job at it too!

But let us not get carried away just yet – these tools are not infallible. There is always the possibility that some AI Content may slip through the cracks (after all, AI isn’t perfect…yet).

So, while we can certainly rely on them to flag most automated Content, we should still exercise caution and use our own human judgment as well.

Comparison of Different AI Content Detection Tools

Here’s a comparison of different AI content detection tools based on their accuracy.

Tool UsedOutput Score
Writer85 % AI
Kazan91.3% AI
Copyleaks97% AI
Content at Scale90% AI
Originality AI95% AI
GPT-2 Output Detector94.7% Fake
Crossplag89% AI
Sapling AI93.1% Fake

We used ChatGPT to create a 300-word blog post and ran it through each of the AI Detector tools listed above.

As seen in the comparison table, each AI detector displays the percentage of AI-generated text. Based on the aforementioned results, Copyleaks appears to be stricter and difficult to bypass AI detection.

Although GLTR does not provide a score for AI plagiarism, when we evaluated the blog on GLTR, we noticed that about 90% of the material was flagged as suspicious (AI written).

Suggested Read: Best Plagiarism Detection and Remover Tools


AI-generated content has become a genuine issue online due to its lack of authenticity, chances of misinformation and lack of emotions. And if that was not enough, Google has started flagging AI content.

But, when it comes to ensuring content originality, AI content detectors are the most reliable options. They are smarter, faster, and more accurate than human methods.


  1. Are AI content detectors accurate?

    No, not 100%. After all, AI content detectors also use Machine Learning to check the AI written content, and AI is still not perfect yet.

  2. Are AI content detectors reliable?

    Although AI content detection tools are reliable, they do have boundaries. Therefore, sometimes human review is required for precision and context awareness.

  3. How does a content detector work?

    The AI content detector analyses a huge number of datasets and recognizes AI patterns to determine whether a piece of text was written by a human or by AI.

  4. Can AI generated content be detected easily?

    AI content can’t be detected that easily, as AI is getting more advanced day by day. However, there are various AI content detector tools that detect AI content accurately. Some of the popular AI content detectors are Writer, Originality AI, Copyleaks and Kazen.

  5. How can we detect AI generated Content?

    You can detect AI generated content by using AI detectors. Simply copy and paste your texts, and these tools will come out with detailed outputs on how much of any content piece is AI generated.

  6. Which is the best free AI content detector tool?

    Content at Scale is one of the top free AI Content detector tools because of its greater level of intelligence, SEO-friendly algorithms, quick access, and numerous features.

Written by Techjockey Team

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