Writing · by Copyleaks
Copyleaks
Plagiarism and AI-content detection with LMS integrations and an API, used by schools and enterprises.
+ Supports 30+ languages and integrates with Canvas, Moodle and Blackboard.
− Credit-based pricing is confusing, and false positives on edited human text are common.
Open Copyleaks ↗ best for: multilingual detection with LMS integration
Evidence
rank #148 of 257Head to head: Turnitin vs Copyleaks QuillBot vs Copyleaks
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+ Already deployed at most universities, so AI scores appear inside the workflow instructors use.
− No individual access, and its AI indicator has led to disputed accusations against students.
+ The paraphraser's mode slider (fluency, formal, simple, creative) is the fastest way to rework a clumsy paragraph.
− Paraphrased text sometimes changes meaning, and its humanizer and detector are unreliable against serious detection tools.
+ Highlights which sentences look AI-generated and offers a Google Docs writing replay as supporting evidence.
− Like all detectors it produces false positives, particularly on non-native English writers.
+ Combines AI detection, plagiarism, fact-check and readability scans with team seats and a full-site scan.
− Known for aggressive detection that flags human writing, with no free tier.