QuillBot – AI Content Detector

QuillBot Free AI content detector tool. Website screenshot.

Content | Multilingual


QuillBot offers a free AI text detector tool that can identify if written content was generated by AI systems like ChatGPT, GPT-4, or Gemini. 

The tool is valuable to use alongside other QuillBot's writing tools.

Who Can Use It:

  • Students - Check assignments for accidental AI content.
  • Professionals - Verify work projects and blog posts have an authentic human voice.
  • Researchers - Screen papers to ensure no AI text is present.

How It Works?

QuillBot's tool works by analyzing text for patterns common in AI-generated writing:

  • Repetitive phrasing.
  • Awkward sentence structure.
  • Unnatural, choppy flow.
  • Flags portions of text likely generated by AI.

Key Features:

  • Supports English, Spanish, German, and French.
  • User-friendly interface for text input/upload.
  • Potential for integration with other applications.


  • Performance may vary across contexts and domains.

Overall: ★★★★☆

The AI content detector from QuillBot did great in our testing.

Human written text detection: ★★★★★

It detected our human text as 100% human.

Modified AI-generated text detection: ★★★☆☆

It detected our modified AI-generated text as 69% AI.

AI-generated text detection: ★★★★★

It detected our AI-generated text as 100% AI.

Disclaimer: Results may vary. Always do your own testing.

The tools on this website are tested using a specific testing method for each category. This ensures they are evaluated fairly and in a way most people would use them.

AI detectors may seem similar at first glance, but they come with different features and are intended for various use cases. Choose a tool that best suits your specific needs for the most accurate results. 

Paid tools are usually more accurate and better for advanced users needing integration and bulk detection. 

Free tools can be hit-or-miss, with usage limits and varying accuracy. 

Therefore, we suggest you check out all of our AI detectors to find the best option for you. logo



Contact Us

© Copyright All rights reserved.