Top 7 Free AI Detection Tools To Use For Content Analysis

With the increase in machine-generated content, it is becoming challenging to differentiate between what’s real and what’s not.

Like many other industries, marketing has also adopted and integrated AI technology in recent years. With its capabilities ranging from generating written content to artwork, AI has become a potent tool for businesses worldwide to significantly speed up their content generation process and capabilities. 

For instance, the viral ChatGPT has demonstrated the capabilities of AI language generation, which has created a surge in AI-powered content creation. We’ve also seen the impact of Lensa AI on digital marketing by offering innovative solutions for image recognition and manipulation.

adoption of AI to enhance business processes

Numerous industries have adopted AI to speed up and enhance business processes.

Source: Freepik

However, it’s also important to note the downsides. The quality and credibility of the article might be doubtful, as AI could struggle to recognise authentic and reliable sources of information. This is the objective of the Helpful Content Update rolled out by Google to ensure readers can find the most helpful content on Google searches.

If you’re in the industry, you should check out our article, ‘Impact of AI on digital marketing: Will AI take over my job?’.

Can Google Detect AI Content?

Yes, Google’s algorithms are constantly being upgraded to detect AI-generated content, and if found, they may penalise the website.

This can harm a website’s reputation and lead to negative consequences, such as lower search engine rankings, reduced customer engagement, and even legal action in some cases.

Businesses must ensure their website’s content is original and engaging to maintain credibility with their customers and search engines. That’s why it’s essential to use AI content detection tools to check the authenticity of the content before publishing it.

How Accurate Are These AI Detection Tools?

The accuracy of AI detection systems depends on the algorithm’s quality. Depending on the task’s complexity and the algorithm’s quality, some systems may have higher accuracy rates. 

Additionally, some AI detection systems may have lower accuracy rates due to technical issues or human error during implementation.

Tips: Double-check any results generated from your AI detection tool before taking action.

How Do AI Detection Tools Work?

AI detection works by using various algorithms to detect patterns in data. These algorithms are designed to recognise specific patterns or keywords that may indicate malicious activity or inaccurate content.

AI detection tool uses algorithm to detect data patterns

AI detection works by using various algorithms to detect patterns in data.

Source: Freepik

In the context of AI-generated content, these detectors will analyse language patterns and writing styles to ensure that the content is genuine, relevant, and engaging. By utilising AI detection tools, businesses can produce high-quality, unique content that builds their brand’s reputation and customer trust.

The 7 Best Free AI Content Detection Tools You Can Use

  1. Content at Scale AI Detector
  2. Kazan SEO
  4. GLTR (Giant Language Model Test Room)
  5. Hugging Face OpenAI Detector
  6. GPTZero
  7. Crossplag

These AI content detection tools can detect AI-generated content, regardless of the software used. The best part is that most of them are free, so you can enjoy the benefits of advanced content detection without breaking the bank!

Of course, we couldn’t resist putting the AI content detectors to the test. We had ChatGPT generate a few paragraphs on terrariums, and then we fed them through the tools to evaluate their effectiveness (see pictures below).

Content at Scale AI Detector

Trained on billions of individual pages of data and words, this free AI detection tool uses multiple advanced computer programs (natural language processing (NLP), semantic analysis algorithms, and SERP parsing capabilities) to scan for plagiarism or copied content.

Results from the Content at Scale AI Detector

Results from the Content at Scale AI Detector

The tool gives you a score of 100 to show how likely it is that your writing will be detected as artificial. It also generates a detailed report showing the percentage of original content and any flagged content.

The report also highlights each sentence in different colours to show how likely it is to be AI-generated. This way, you can easily edit suspicious sentences and feel confident that the rest of your writing is authentic.

Kazan SEO

Kazan SEO’s AI content detection tool is free to use, like other platforms. It provides quick and accurate insights into the percentage of AI-generated copy in a block of content.

Results from Kazen SEO

Results from Kazen SEO

In addition to its AI content detection feature, Kazan SEO offers a comprehensive suite of tools for optimising search engine rankings.

These include keyword clusters, co-relational content optimisation, URL text extraction for SEO analysis, a backlink generator and crawler, and numerous other features.

The AI content detector offered by is an efficient tool that generates a straightforward report, making it effortless for users to comprehend the results. With an easy-to-use interface, it allows users to quickly check their AI-generated content before publishing it.

Results from

Results from

This tool can benefit various industries, from bloggers to marketers and researchers, who want to avoid publishing content that might be perceived as misleading or unreliable.

Like Content at Scale, Writer’s AI shows a detection score as a percentile value.

GLTR (Giant Language Model Test Room)

Developed in collaboration with the Open AI team, GLTR is an open-source project to identify whether an artificial intelligence language model has generated a given text.

Results from GLTR

Results from GLTR

To achieve this, the tool uses a neural network model trained on large amounts of text to detect the probability of a word being generated by a language model.

GLTR’s versatility allows it to analyse any text, ranging from short messages to long-form articles and source code.

The software colour-codes words in a post based on their ranking, with green, yellow, red, or purple indicating their likelihood of appearing in a sentence.

Hugging Face OpenAI Detector

With its advanced technology, this AI detector has been adopted by over 5,000 organisations, including renowned companies like Google AI and Grammarly.

Results from the Hugging Face OpenAI Detector

Results from the Hugging Face OpenAI Detector

It can identify not only AI-generated text but also other types of content manipulation, making it a highly reliable tool for ensuring the authenticity of text content. Copy and paste your content into the text box, and the tool will rate the authenticity from “fake” to “real”.

Moreover, this detector is part of an open-source AI community where individuals passionate about AI technology can share their knowledge, collaborate on machine learning projects, and discover new ideas.


With over 1 million successful uses, GPTZero is a super helpful AI text detection tool for anyone who wants to detect AI-generated content. It was created by Edward Tian, a Princeton University student passionate about computer science and journalism.

Results from GPTZero

Results from GPTZero

The tool measures perplexity and burstiness to determine whether the text was written by a human or an AI program.

Recently, Tian released an updated version called GPTZeroX, which includes features requested by educators, such as more extensive input options and faster operation.


Crossplag is a powerful AI content detector tool that stands out from its competitors due to its unique features. Users can paste their text into the window on the screen and click the blue “Check” box to get an overall rating on the authenticity of their content.

Results from Crossplag

Results from Crossplag

One of the tool’s most notable features is its thermometer scale graphic, which shows how much of the article is “fake”.

This feature is unique and helpful for users, making it easy to determine if their content is clear for publishing. If the thermometer stays green, a human has generated most of the article, but if it heads to the red side, it means AI has generated most of it.

In conclusion…

As you can see from the results of each AI content detector tool, the accuracy varies. Therefore, having a human editor and proofreader review your content is always advised. Have a go at them yourself; they’re all free to use! You can use any of these six trending AI software or content writing tools for SEO to test the content out.

In addition to the ones mentioned, other free AI content detectors are available online, such as TurnItIn AI Detection Model, Sapling AI, Corrector App, Copyleaks, and many more. 

Do you need help coming up with effective SEO content? Let us help.

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