5 Free AI Content Detectors (GPT / ChatGPT)

Here's a list of AI-powered content detectors that can help identify and prevent plagiarism, ensuring originality and authenticity in your work.

As the use of AI in content creation continues to rise, it has become increasingly challenging to differentiate AI-generated content from human-written content. Fortunately, free AI content detectors are now available to help us distinguish between the two.

robot typing on laptop

These detectors use machine learning models like GPT and ChatGPT to analyze text and determine the likelihood of it being generated by AI. In this article, we’ll introduce you to five of the best (and free) AI content detectors available online. With just a simple copy and paste, these tools can identify whether humans wrote your content or has gotten some help from AI writting tools.

AI Text Classifier by OpenAI

AI Text Classifier by OpenAI

The AI Text Classifier created by OpenAI is a specialized GPT model. Its purpose is to determine the probability that a piece of text was created using AI. This can include sources like ChatGPT. To utilize this tool, a minimum of 1,000 characters or around 150-250 words of text are required.

To begin, paste the content you want to analyze and press the “Submit” button. The AI Text Classifier will then provide information about the probability that the text was created by a human or generated by AI.

Detects: ChatGPT and other various AI generated text.

Detect AI Content with AI Text Classifier

GPT Detector by Writefull

GPT Detector by Writefull

If you are uncertain whether a piece of text is an original piece or an AI-generated version, then this tool will come in handy. Created by folks at Writefull, this tool is simple to use.

You just need to copy and paste the text into the tool and click the “Check” button. Afterward, it will provide you with a percentage that indicates the likelihood that the content was generated using GPT-3, GPT-4, or ChatGPT.

Detects: GPT-3, GPT-4, and ChatGPT

Detect AI Content with Writefull

AI Detector by Sapling

AI Detector by Sapling

This AI detector is user-friendly. Simply copy and paste the content you want to check, and it will automatically examine whether it was written by a bot. The detector determines if the content is fake or not and highlights in red the parts that are likely to be fake, or in other words, written by a bot.

Detects: GPT-3.5, and ChatGPT

Detect AI Content with Sapling

AI Content Detector by Writer.com

AI Content Detector by Writer.com

This AI content detector is capable of verifying up to 1500 characters of text, and it is free of charge.

You can use it by either pasting in the content you want to analyze or providing a URL to it. After you have done this, all you need to do is click on the “Analyze text” button. The detector will then indicate whether the content was generated by a human or a bot.

Detects: Unstated.

Detect AI Content with Writer.com



ZeroGPT is a tool that can detect whether the text has been created by GPT-4, ChatGPT, or humans. It is trusted by professional writers, copywriters, and freelancers to determine whether AI tools or humans generated a text.

To use it, simply paste the content you want to analyze or upload a text file and click the ‘Detect Text’ button. The tool will then provide you with a percentage indicating the likelihood that generative AI created the content.

Detects: GPT-4, and ChatGPT

Detect AI Content with ZeroGPT