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Copyleaks AI Detector Review
Long-established plagiarism checker with AI detection. Deep integrations with Canvas, Moodle, Blackboard.
Best for LMS Integration. Best for: Higher education, LMS administrators.
In-Depth Review
Copyleaks has been in plagiarism detection since 2015. AI detection was layered on top of existing infrastructure when ChatGPT launched.
The LMS integrations lead the industry. Canvas, Moodle, Blackboard, Google Classroom, and Microsoft Teams all have native integrations. Students submit work through their existing LMS without leaving the learning environment.
In our benchmark, Copyleaks scored 79% — the fourth-highest in our test. The 12% FPR and 22% FNR are higher than top performers. AI detection feels like a layer added to a plagiarism product.
Multilingual support (100+ languages) is a genuine competitive advantage for international universities.
Pros & Cons
- +Canvas, Moodle, Blackboard integration
- +Plagiarism + AI in one
- +100+ languages
- +API available
- -Lower accuracy (79%)
- -High FNR at 22%
- -Interface feels dated
Technical Details
Methodology
Accuracy from testing on 2,400 samples: 1,200 human-written and 1,200 AI-generated from Claude 3.5, GPT-4o, Gemini 1.5 Pro, and Llama 3.1. See full methodology.
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