ChatGPT Detectors – best AI checkers revealed

What are AI checkers? We explain how AI-generated text is detected, as well as listing the best Chat GPT checking software.

Best AI checkers and Chat GPT checkers

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If you are a frequent user of OpenAI’s language model, you may be wondering what AI checkers (AKA Chat GPT checkers) are out there. Commonly known as AI detectors and AI checkers, this is software that can recognize when text has been written by AI. In this article, we will dive into some of the best current technology available that can detect AI-generated texts. Which is the best AI detector?

What are AI checkers? – Chat GPT checkers explained

ChatGPT is a revolutionary online AI model, made free to the public near the end of last year. The AI bot has been making headlines for its human-like responses and ability to do pretty much any task.

Many users have been taking advantage of what this model can do. For example, using the bot for essay writing, completing coding tasks, and generating creative content. This unsurprisingly leads to students using large language models (LLM) to do their homework for them.

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In recent news, media company, Buzzfeed has announced they will be using the technology behind ChatGPT ( the GPT-4 model) to create written content for their site. This is a major step for AI. There are already mounting concerns about AI models, like ChatGPT, replacing human writers, and to our dismay, it is already happening!

A major issue with widely available AI models, like ChatGPT, is that many students are no longer writing their own assignments.

To combat this, anti-cheating software companies and AI detection businesses are playing a game of cat and mouse trying to catch up with ChatGPT’s capabilities. Thus we have the arms race between AI generators and AI detectors.

What makes this battle even more futile (and admittedly funny) is the fact that it’s equally easy for a student to check ‘their work’ with an AI detector to ensure it’s undetectable, as it is for the educator trying to catch them.

Regardless, these are the ChatGPT detectors in question:

Top 7 AI detector tools 2023

Best AI detector features

NameAI checkingPlagiarism checkingGrammar checkingChrome extensionAPI integrationFree plan/trial
Corrector AppYesNoNoYesNoYes
Content at ScaleYesNoNoNoNoYes
Writers AI Content DetectorYesNoYesYesYesYes
Comparison of AI checker software plans is one of the most accurate detectors of ai-generated content on the market today and boasted an impressive accuracy of 96% over a testing data set of 1200 samples. It can detect anything from GPT-4 to Bard, and more.

This tool is able to easily identify human-written content, and can even highlight specific sections of content that it predicts will be AI-generated. Then it can report which text was AI-generated and which text was not. As a result, it helps educators to detect the use of AI to write essays and reports. is built more with web publishers in mind, rather than academia. Therefore, you can gain access to other features that help with content output and workflow with your team. Pricing is set at $0.01 per credit, with 1 credit scan equalling 100 words.

GPTZero + AI detection API

Edward Tian, a 22-year-old from Princeton University, developed a tool called GPT Zero. The app claims to detect texts created by Chat GPT and as of late has had a 98% success rate. The pilot version of GPTZero is currently available for free on their website. The tools works by measuring two attributes of the generated text: Perplexity and burstiness. In Tian’s words, “perplexity is a measurement of randomness”. The higher the perplexity or the more random the text is, the higher the chance a human wrote it.

In addition, burstiness relates to how intricate the sentences are. According to Tian, humans typically write using varied sentence lengths to create impact. Whereas, AI models tend to write more consistently. By looking at both perplexity and burstiness, Tian has managed to create a very reliable ChatGPT detector.

GPTZero also offers plagiarism detection as part of its use. So it’s not purely looking for instances of natural language processing- generated content. It’s also checking to offer a holistic score on the originalist of the content.

This option sets “the gold standard in AI detection, trained to detect ChatGPT, GPT4, BARD, Llama, and other AI models.” They also have an API, so you can “Integrate GPTZero’s AI detection abilities into your own tools and workflow.”

This gold standard is cemented with OpenAI’s latest GPT 3.5 Turbo fine-tuning update. In-house testing has shown that “fine-tuned version of GPT-3.5 Turbo can match, or even outperform, base GPT-4-level capabilities on certain narrow tasks.”

Corrector App

Corrector App’s AI Content Detector is another free online tool that is supposedly capable of identifying Chat GPT-generated texts. According to the website, the tool is specifically designed to detect texts that have been created with some help from a GPT-3 model.

To check a piece of work, you can simply paste up to 300 words at a time and run a full audit over the passage. Then the tool works by running ‘syntax’ and ‘semantics’ analysis on the submission. It then outputs a “fake” percentage score indicating the likelihood of the text being GPT-generated.

Content at Scale AI detector

This AI detection tool represents a “highly-accurate AI text detector, trained on billions of individual pages of data and words across multiple large language models (LLM’s), to forecast if your content is AI generated, or humanly-written.” Their artificial intelligence AI classifier boasts 98% accuracy across Chat GPT, GPT 4, Google Bard, Microsoft Bing Chat, and Anthropic Claude.

Content at Scale also offers an AI writing tool for producing undetectable AI content, backed by their own AI checker software – in other words, if they can’t detect AI-written text, then no one can! At least, that’s the pitch:

Our proprietary content platform uses a mix of 3 AI engines, natural language processing (NLP) and semantic analysis algorithms, crawls Google, and parses all the top ranking content to put research-backed, long-form, SEO driven blog posts together.


GPTRadar is another ChatGPT and AI detector created by Alessio Nittoli and Antonio Cappiello. It used OpenAI GPT-3 to figure out if the written content is by a human or generated by a machine.

You can use the tool for free to start without signing up, but then you’ll have to buy credits to detect and edit more text. You can find out more at the GPTRadar website.

Writers AI content detector

Writers AI content detector is another simple, yet effective, tool that can be used to check if your page is written by a human. You simply enter a URL or text and it will calculate a ‘Human Generated Content’ score – and it’ll do it pretty quickly too.

OpenAI’s AI Text Classifier (Discontinued)

In early 2023, OpenAI released their version of an AI detector named AI Text Classifier. The beta version proved to be too unreliable to see widespread adoption, and it has since been cancelled. As a result, this is a damning conclusion to be drawn by the worlds foremost LLM development firm. If even they, using an extremely advanced trillion-parameter AI model, can’t tell what’s real and what’s AI-generated, we can also conclude that those with less accurate models have even less of a chance. Which, to be clear, is everyone.

What is a Chat GPT detector or Chat GPT checker?

A Chat GPT detector is a piece of software that works to identify text which has been generated by Chat GPT. They work in various ways and are not 100% accurate. However, they are beginning to form useful tools in the efforts against AI-assisted cheating and fraud.

This is synonymous with ‘Chat GPT checker’, which is any AI-generated text detection system. These systems are most commonly referred to as Chat GPT detectors or Chat GPT checkers simply because OpenAI’s chat bot is the most popular of its kind. The same software will work with any LLM or AI chatbot.

What is the best detector for ChatGPT?

Of all individual ChatGPT detection tools, Originality AI is a strong option. However, false positives are always possible with ChatGPT detectors; to minimize the possibility of encountering them, you may be best to run checks across two or more detectors. Also, if you are paying for one, GPTZero is a good supplementary detector tool to use as it’s free. Similarly, ZeroGPT, which is a separate tool, is worth using for any piece of writing or piece of content you want to check.

Final thoughts

So, those were a couple of ChatGPT detectors currently on the market. As time passes, it is highly likely that GPT detection technology will become much more sophisticated. Making it merely impossible to get away with AI-generated essays and assignments.

ChatGPT was initially an open-source project, and still offers the ChatGPT API to this day – a useful tool for detecting itself, if you know a little Python code.

It is important to note that in the future OpenAI has already announced that they will be creating watermarks to attach to Chat GPT’s responses. This will indicate when the text was generated using their model, making Chat GPT detection much easier in the future.