OpenAI released a new web-based AI Text Classifier tool to detect AI-generated text

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AI Text Classifier
© Photo by Safar Safarov

On January 31, OpenAI released an AI Text Classifier that may be able to help you determine whether the text you’re reading was written by AI or by a human.


“We’ve trained a classifier to distinguish between text written by a human and text written by AIs from a variety of providers. While it is impossible to reliably detect all AI-written text, we believe good classifiers can inform mitigations for false claims that AI-generated text was written by a human: for example, running automated misinformation campaigns, using AI tools for academic dishonesty, and positioning an AI chatbot as a human.” stated on OpenAI website.

Even if it can’t distinguish 100% AI-generated and human, there are many upsides to having such a tool. Also, if you are a content publisher (like us), you should run any content submitted by your freelance writers through these tools.

What is OpenAI’s AI Text Classifier?

AI Text Classifier

The AI Text Classifier is a fine-tuned GPT model that predicts how likely it is that a piece of text was generated by AI from a combination of sources, such as ChatGPT. Here you can try it!

Each document is labeled as either very unlikely, unlikely, unclear if it is, possibly, or likely AI-generated.

Current constraints:

  • A minimum of 1,000 characters, or approximately 150-250 words, is required.
  • The classifier isn’t always correct; it can label both AI-generated and human-written text incorrectly.
  • AI-generated text can be easily edited to avoid detection by the classifier.
  • Because it was trained primarily on English content written by adults, the classifier is likely to make mistakes when reading text written by children or text written in a language other than English.

But noted in FAQ on the OpenAI website, “Our intended use for the AI Text Classifier is to foster conversation about the distinction between human-written and AI-generated content. The results may help, but should not be the sole piece of evidence when deciding whether a document was generated with AI. The model is trained on human-written text from a variety of sources, which may not be representative of all kinds of human-written text.”

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