PlagiarismCheck.org is a web-based plagiarism checker and AI-content detector that helps teachers, students, writers, and institutions assess text originality and verify authorship.
About
PlagiarismCheck.org is an online service for detecting plagiarism and AI-generated text, aimed at educators, students, writers, and organizations that need to verify the originality of written work. It addresses two related problems: copied or improperly paraphrased content, and text produced by generative AI tools such as ChatGPT. The company states that it has operated for more than eight years and has processed over 21 million texts for more than one million users.
The product works by comparing submitted text against publicly available online sources and extensive internal databases, then producing an interactive report that shows a similarity percentage and links to the matched sources. It also runs a separate AI-detection analysis and can flag disguised plagiarism such as word substitutions and rearranged sentence structures. PlagiarismCheck.org offers a free check for the first pages of a document, institutional accounts, LMS integrations, and a developer API documented with an OpenAPI schema.
Key Features
Pricing & Fees
- Pricing: Not publicly listed on the pages we reviewed; check the official site for current plans. Institutional Advanced and Pro plans are quoted on request, as are business and individual subscriptions.
- Free tier: Individuals can check text for plagiarism for free on the site, and the homepage offers a free check of 2 pages.
- Interface languages: The Advanced institutional plan supports English, German, French, Portuguese, and Spanish; the Pro plan supports any interface language.
- Reliability: Institutional plans advertise 99.99% uptime, onboarding, training, and a dedicated account manager.
- Related free tools: The site also offers a grammar checker, citation generator, essay grader, and topic generator for individual users.
Who It's For
PlagiarismCheck.org is built primarily for education: K-12 schools, higher-education institutions, and individual teachers who need to check student submissions efficiently, including through LMS integrations. Students can use it to verify their essays before submission, while writers, bloggers, and content creators can confirm the originality of their published work. Businesses and ed-tech platforms can embed checking capabilities through the API, and institutions with stricter requirements can use closed-depository searching and authorship verification on higher-tier plans.
FAQ
What is PlagiarismCheck.org?It is a web-based plagiarism checker and AI-content detector that assesses text originality, verifies authorship, traces AI-generated content, and links matches back to their sources.
Is there a free option?Yes, individuals can check text for plagiarism for free, and the homepage advertises a free check covering 2 pages.
Which platforms does it integrate with?It integrates with Canvas, Moodle, Google Classroom, Schoology, Brightspace, Blackboard, and Populi, and it offers a Google Docs add-on as well as a public API.
How much does it cost?Pricing is not publicly listed on the pages reviewed; institutional Advanced and Pro plans are provided by quote through the official site.
Can it detect attempts to disguise plagiarism?Yes, the tool is designed to detect word substitutions and rearrangements in word order and sentence structure, in addition to direct matches and AI-generated content.
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