Copyleaks
Plagiarism and AI detection in 100+ languages, from free to enterprise
Overview
Copyleaks is a complete platform handling both traditional plagiarism detection and AI-generated content detection in 100+ languages including English. Its free plan allows roughly 10 pages (2,500 words) per month, enough for occasional checks. Paid plans start at ~$9/month for 100 pages.
Its strength lies in a rich integration ecosystem: educational LMS, office suites, well-documented REST API. It's particularly suited for training organizations, consulting firms, and HR departments receiving many documents for review.
Our verdict
Copyleaks is a solid choice for an SME or training organization needing a versatile, multilingual, well-integrated tool. The free plan suffices for very occasional use. On the flip side, it's pricier than ZeroGPT or GPTZero for heavy use, and AI detection accuracy remains imperfect like all competitors.