Free Plagiarism and AI Detectors

Summary

These free plagiarism tools can be used to detect plagiarism and AI use in course submissions.

Body

Overview

These free plagiarism tools can help detect plagiarism and AI use in course submissions.

 

How-To-Guides

1. Quillbot

• Very low false positive rate 

• Detects a high proportion of edited AI texts and up to 100% of GPT-4 texts 

• Provides a percentage 

• Also includes a plagiarism check 

• Offers a money-back happiness guarantee and live support 
 

2. GPTZero 

Basic free plan includes 1 AI detection per day, no signup required for some features

Requires a free account to use

Very comprehensive AI detection report 
 

3. Scribbr

Free & quick; shows a percentage score & highlights AI vs human-style text

Free version - Good interface with a “likely AI” result

 

4. CopyLeaks 

• Free 

• Accurate for a free tool 

• Low false positive rate 

• No sign-up required—paste in text 

 

5. HumanizeAI

Pro Detector

The humanizer may alter meaning; sometimes the improvements to avoid detection can reduce clarity. 

 

Additional Information

Need additional information or assistance? Contact the Office of Digital Instruction at online@morehouse.edu.

Details

Details

Article ID: 4233
Created
Tue 12/16/25 7:58 AM