Scribbr – AI Detector

Scribbr offers a free online tool that can detect if a piece of text was written by an AI like ChatGPT rather than a human. 

Who Can Use It:

• Students - To check that essays and papers don't contain any uncited AI-generated content.
• Teachers - To verify that assignments were written by the student themselves and not with extensive AI assistance.
• Writers/Bloggers - To ensure articles and content are fully original before publishing online, which is important for SEO.

How It Works?

Scribbr's AI Detector uses advanced algorithms to identify AI-generated content from tools like ChatGPT and Gemini. 

It analyzes text characteristics and provides a likelihood score for AI authorship. 

The tool works best with longer texts, reliably detects GPT-2 and GPT-3 content, and can identify GPT-4 writing despite this being experimental.

Key Features:

• Free and unlimited usage, no account required.
• Simple user interface to paste/upload text.
• Maintains user confidentiality, doesn't store data.
• Option to integrate with premium plagiarism checking.

Limitations:

• Can struggle with shorter texts (less than 200 words).