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How to Determine If a Text Was Written by AI or Not

Several services that can determine whether a text was written by a human or AI. Useful if you want to check whether AI was used in the writing process, analyze authenticity, or verify content originality.

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Introduction

Sometimes it feels like AI-generated texts are everywhere. They are used in education, business, and various other tasks. If you need to determine whether a text was written by a human or an AI, the tools in our selection will help you.

GPTZero

The most popular service of its kind. It allows free verification of up to 10,000 characters per month. Works quickly and can detect texts generated by ChatGPT, Gemini, Claude, and other AI models.

AI tool website: gptzero.me
Limits: free up to 10,000 characters

DetectGPT

A similar service that quickly identifies AI-generated text. The free plan allows verification of up to 3,000 words. It also offers a feature to humanize text, but this requires a paid subscription.

AI tool website: detectgpt.com
Limits: free up to 3,000 words

GPTKit

Another site that helps detect AI-written text. Like the others, it offers free usage with a limit of up to 2,048 characters per check. In some cases, it may work better or worse than its counterparts, depending on the text.

AI tool website: gptkit.ai
Limits: free up to 2,048 characters