Free Tools for AI Content Detection including & chatGPT[Crazy Accurate]

Updated on: February 25, 2023

Is there a way to detect if a given piece of writing is written with the help of AI writing tools? Are there any AI content detection tools available? Can they reliably determine if the author of a given text is human or machine?

What is Google's advice on the use of AI written content on your websites? Can Google detect AI generated content? Will Google penalize and derank your website if you have a substantial amount of AI written articles on it? Do AI writing tools help or harm your SEO strategy?

Read this article to find out answers to these questions and more!

AI Generated Writing is Growing Everywhere

ai writing tools robot generated content

It is becoming common to encounter AI generated text, art, music and videos in the 21st century. Dalle-2 is able to generate original high-quality images from text prompts. With large language models like GPT-3, individual creators and large organization are automating content creation on a large scale. Bloggers, copywriters, and content marketing teams are regularly using AI content writing software in their projects. Such automatic writing applications must feel like magical gifts, especially for smaller teams. Finally, they can scale their content pipeline and libraries at affordable budgets and in a short time.

There are many bot accounts on Twitter, Facebook, and other social media platforms. They comment, reply, and interact with a large number of users automatically and at scale. While some projects use such bots for creative and helpful purposes, there are many bot armies that spread spam content and try to scam unwitting users. Be it crypto scams or fake news to influence public opinion during elections, such bot accounts can convincingly apply natural language processing to fool people.

This phenomenon will only grow over time. How will online platforms deal with AI generated content? What rubric and criteria will they use to separate good uses of AI from bad ones? Only time will tell, but Google has already issued a warning regarding this in April 2022.

Google Does Not Like AI Generated Content, How Can Google Detect AI Content?

In an online webinar in April 2022, search advocate John Mueller of Google commented on this topic. He revealed that the content that is generated automatically using AI writing tools is seen badly as per Google's Webmaster Guidelines. For a while, there has been a debate in the SEO community regarding the proliferation of GPT-3 powered AI content generators. Mueller was asked a question by a user, and he replied that Google uses manual reviews to detect AI content, and penalizes if such instances are found out.

“For us these would, essentially, still fall into the category of automatically generated content which is something we’ve had in the Webmaster Guidelines since almost the beginning.

And people have been automatically generating content in lots of different ways. And for us, if you’re using machine learning tools to generate your content, it’s essentially the same as if you’re just shuffling words around, or looking up synonyms, or doing the translation tricks that people used to do. Those kind of things.

My suspicion is maybe the quality of content is a little bit better than the really old school tools, but for us it’s still automatically generated content, and that means for us it’s still against the Webmaster Guidelines. So we would consider that to be spam.”

John Mueller, Google Search Advocate (April 2022)

There was a follow-up question from the community whether Google can automatically detect AI generated content at scale? While Mueller said at the time that this is not possible, and that Google relies on human reviewers, we found out something different.

Are there any free AI Content Detection Tools?

There are AI content detection tools like OpenAI GPT-2 Detector by HuggingFace, and GLTR by a small team of AI researchers from MIT and Harvard. They take your input text, and give insights regarding the probability that it is AI generated or not. And the GPT-2 detector can often detect GPT-3 writings as well.

So, there is no reason why Google cannot build and deploy automated and advanced AI content detection tools. It seems like only a matter of time before Google and other search engines start to penalize and derank websites using AI content detection at scale.

How to Detect AI Generated Content?

We found out two basic free tools that can be used to see if a piece of writing is classified as human-written or AI-written. Both these tools are free and provided as demos rather than finished products for end-users. So the results from them are only suggestive. They can produce false positives and false negatives at times as well. But even so, seeing them automatically distinguish manually written text from AI written text is alarming. Let us briefly understand how you can use these two tools to detect AI content. There is another paid tool called OriginalityAI which does both AI content detection and plagiarism checking for serious content producers.

1. GPT-2 Output Detector Demo

The GPT-2 Output Detector tool hosted on HuggingFace is based on the code released by OpenAI itself. It analyzes your input text, and gives you the probability in terms of percentage that it is Real (written by humans) or Fake (generated by AI).

  1. Go to
  2. Copy 50–700 words from any piece of text, and paste it in the input box.
  3. The tool will immediately give results as Real or Fake. If it is not showing any results within a couple of seconds, it means the word count of your copy-pasted text is more than its limit.
  4. See this result where the text is classfied as 99% Fake, with Red color on the bar.
    gpt2 output detector 99% FAKE
  5. See this result where the text is classified as 99% Real, with Blue color on the bar.
    gpt2 output detector 99% REAL
  6. For some samples, it can give weak results, something like 30-70 or 50-50. It might be the case that you took AI generated text and then edited it substantially.

2. GLTR Live Demo

Giant Language model Test Room, or GLTR, is like a forensic tool which analyzes a body of text. Then, it colors the words individually as green, yellow, red, and violet. These colorings are indicate if a given word has a high probability of occuring after the previous word. If most of your text is shown as green, it is fairly clear that it was generated by a language model. And if your text has a healthy mix of all colors, it is fairly clear that a human wrote it.

  1. Go to
  2. You can select from their sample texts by clicking on the boxes. e.g. click on the first demo text box "machine: GPT-2 small top_k 5 temp 1".
  3. Or, you can copy-paste any body of text, such as from your own blog. And then click on the Analyze button.
  4. The GLTR tool analyzes and shows you the result by coloring the words.
  5. You can see how it entirely colors the demo text "machine: GPT-2 small top_k 5 temp 1" as Green. This means it is machine generated text. Note that usually you will not get all green result like in this example. There will be some yellow and red too. But the higher the distribution of green words, the more likely that it is automatically generated in a predictive fashion.
    gltr ai content detector GREEN machine written
  6. You can see how the human written "human: NYTimes article" demo sample produces a colorful analysis. This indicates that the text contains several low probability words in the given sequence. Thus, the likelihood that a real human wrote this text is higher.
    gltr ai content detector COLORFUL human written

3. OriginalityAI  [Crazy Accurate]

How to detect AI Content including and Plagiarism?

originalityAI plagiarism checker ai detection tool logo

OriginalityAI is a plagiarism checker and AI content detector. It is a great way to ensure that all your content is written by humans and fully original. It is built keeping in mind serious content producers because usually all plagiarism-checkers are made for academia.

originalityai dashboard plagiarism checker ai content detector

OriginalityAI can detect content written by GPT-2, GPT-3, GPT-3.5 (davinci-003) and other versions. It also detects whether any content is copied or plagiarised from existing websites.


Here's how to detect AI content and plagiarism using OriginalityAI:

  1. Login to OriginalityAI and purchase some credits.
  2. Once you are on the dashboard, you can click the blue button on top right "New Content Scan".
  3. Copy-paste the content you have in the textbox. Check or uncheck the two detectors: AI content and Plagiarism, according to your needs. For example, text created with ChatGPT is clearly marked as 99% AI by OriginalityAI.originalityai content scan result AI detected chatGPT
  4. OriginalityAI scans your content compared with its database and large language models and gives you a score for AI content and Plagiarism. For example, the content we have written for our blog posts is passes the plagiarism check and is detected as 91% human written.originalityai content scan result not AI
  5. If a piece of content has a higher percentage of AI detected, you need to rewrite it in your words. Similarly, if your content is plagiarised, you will be shown the original links from where it is copied. For example, content copied from a wiki site is detected as human-written but 100% plagiarised.originalityai content scan result plagiarism detected
  6. You can see the history of all content you have scanned on the dashboard, under "Recent Content Scans". You can also add your team members to use the tool. In this way, they can perform content checks, and you can view all the results of scans.originalityai recent content scans
  7. Thus, you can get all your content scanned by OriginalityAI, and ensure that all your content is human-written and original. It is very important to maintain high-quality and original content to succeed in online publishing.

You can try using OriginalityAI to ensure all of your content pipelines have only high-quality, original, and human-written content. Whenever you detect plagiarism or AI-written content, you must rewrite the content and check again. This tool detects content as well if you want to confirm about the tool used for AI content.

4. AI Text Classifier by OpenAI

OpenAI tool launched an AI text classifier to detect ai generated content.

This tool can predict possibility as it's very difficult to provide assurance of AI-generated content which are using different language models.

How to use AI detection tool from OpenAI

  1. Navigate to AI text classifier
  2. Input content which you want to check.
  3. Once scan complete it will show you results like below AI-content-detector

We tried to check multiple AI-generated contents in this tool but its showing different results everytime that's why you must consider OriginalityAI tool for 100% assurance of AI content detection.

Are AI Writing Tools Good or Bad for SEO?

ai content detection automatic writing tools robot generated content

While there is no clear consensus, nor a large scale study on this topic, there are many voices advising caution. Bloggers who used AI writing tools for their websites have experienced rejections from Google AdSense. On Youtube, SEO experts are sharing that Google delisted their clients' sites because 70% of their content was AI written. And now, they are rewriting their entire content library with the help of human writers.

While earlier, there were many positive voices saying how AI writing tools helped them rank higher, now the opposite views are surfacing. Our guess is that this is a cat-and-mouse game. Sometimes you will reap benefits from using AI tools. And sometimes you will incur losses. The SEO and AI writing tools landscape is constantly changing.

Another user suggested that rather using AI content generator software, they have been using AI paraphrasers. Their workflow involves manually researching and compiling accurate and reliable information. And then using a paraphrasing tool like Quillbot to reword the sentences and paragraphs. Their experience has been that their readers see their content as high quality. Search engines are also ranking their pages well.

But such instances are anecdotal. It could be that is only a matter time till Google, Bing and other search engines will flag their content as plagiarized or AI generated. So, the safest bet is to stick to human writing workflows and ensure high quality of work. You can always use AI tools to automate and speed up other parts of your workflow.

ai content detection turing test

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  2. I often read your site and suggest it to everyone who wants to get information quickly and easily. Both the writing style and the material are of the highest caliber. Thank you for the insight you bring the readers!

  3. AI generated text detection tools are not perfect, and there are still some limitations to what they can do. For example, they may not be able to detect more subtle forms of plagiarism, such as paraphrasing or rewording text.

    Overall, AI generated text detection tools are a useful tool for identifying potential cases of plagiarism or copyright infringement, but they should be used in conjunction with other methods of detecting and preventing plagiarism.

    1. I agree that AI content detection tools have high false positive cases. It mainly happens if human-generated content is proofread by a grammar correction tool like Grammarly. So whichever is greater than 50% AI is an absolutely red flag as the article is written using AI tools like or Chatgpt.

  4. There are still limitations to the capabilities of AI-generated text detection technologies. Paraphrasing and rewording text, for instance, are two instances of plagiarism that they might miss.

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