Copyleaks

Copyleaks is a content authenticity platform that combines AI-generated content detection with plagiarism checking in one tool, producing a single report that flags both likely AI writing and matched external sources.

It is used by educators, universities, publishers, content teams, and enterprises that need to verify originality and detect machine-generated text at scale.

The platform supports AI detection across more than 30 languages and plagiarism matching across more than 100 languages, and it extends beyond plain text with an AI image detector that uses forensic analysis and visual overlays, plus a code detector that scans source code for AI-generated patterns from tools like GitHub Copilot and Cursor.

For institutions, Copyleaks integrates directly with major learning management systems such as Canvas, Moodle, Blackboard, Brightspace, Schoology, and Sakai, surfacing results inline in the grading interface, and it offers a robust API for developers who want to embed detection into their own workflows.

Typical use cases include academic integrity checks, vetting freelance or AI-assisted content before publishing, and enterprise compliance. Its strengths are the breadth of detection types in one product, strong multilingual coverage, low reported false-positive rates relative to many competitors, and deep LMS and API integrations.

The main drawbacks are that, like all AI detectors, it is not perfectly accurate and can produce false positives and false negatives, so results should be treated as signals rather than proof, and heavier use can require larger credit allotments.

Copyleaks runs on a freemium model with a limited free tier and affordable individual subscriptions for AI detection, plagiarism, or both, plus custom enterprise pricing for higher volume and integrations. Pricing changes often, so check the official site for current plans.