# Plagium > Plagium checks any text, document or URL for plagiarism and for AI generated content, and returns a report with the matching sources and a section by section AI likelihood. Plagium has been online since 2006 and is built by Septet Systems. The site is available in English, Portuguese, Spanish and French. How usage is counted: 2 free searches per day without signing in, up to 2,000 characters each. No account is required. Text services use 1 credit per estimated page: quick search, deep search, AI detector and file search. One estimated page is 2,500 characters (about 500 words). Credits are bought once, never expire, and one balance covers the available services. Credit-pack usage follows the estimated page count. A one-off document purchase has a minimum monetary price equivalent to 5 pages; this is not a minimum debit of 5 credits. ## Tools - [Plagiarism checker](https://www.plagium.com/en/plagiarismchecker): paste a text or upload a document and check it against the web, news and academic sources. - [AI detector](https://www.plagium.com/en/ai_detector): estimate how likely a text is to be machine written, with section by section highlights, in 12 languages. ## How the products work - [Plagiarism detector explained](https://www.plagium.com/en/plagiarism-detector): what quick and deep search cover, how matched passages are reported and what a defensible report looks like. - [AI detector explained](https://www.plagium.com/en/ai-detector-details): how the likelihood score is produced, how mixed verdicts are reported and what the result does not claim. - [All products](https://www.plagium.com/en/products): overview of plagiarism detection and AI detection. ## Pricing - [Pricing](https://www.plagium.com/en/pricing): pay for a single document from $2, buy credit packs from $7.95, or subscribe. Includes a credit calculator and a plan comparison table. - [Unlimited plan](https://www.plagium.com/en/unlimited): up to 500 operations per calendar month shared between quick plagiarism search and AI detection, on texts up to 5,000 characters each after document preparation. Covered operations use no credits and include the quick-search report and PDF. Deep search, reprocessing, larger texts and operations after the allowance use credits with confirmation before processing. There is no separate daily limit. Cancel from account settings. - [Institutional plans](https://www.plagium.com/en/institutional): from $1,200 per year for 6,000 shared credits, unlimited members on one credit pool, LMS and API integration, payment by invoice. ## Solutions - [For education](https://www.plagium.com/en/solution-for-education): check student submissions at scale and manage a campus on one shared credit pool. - [For publishers](https://www.plagium.com/en/solution-for-editors): screen manuscripts before print, protect a catalog and verify authorship with deep search. - [For companies](https://www.plagium.com/en/solution-for-companies): verify agency and freelancer deliverables and find copies of your content across the web. ## Developers - [API documentation](https://community.plagium.com/en/api-docs): the public Plagium API, for submitting documents and reading reports from your own systems. ## Community and support - [Community hub](https://community.plagium.com): documentation, FAQ and support. - [Knowledge base](https://community.plagium.com/en/knowledge-base): how the checks work and how to read a report. - [Video tutorials](https://community.plagium.com/en/video-tutorials): walkthroughs of the checker, the AI detector and account management. ## Company - [About Plagium](https://www.plagium.com/en/about): who builds it and why. - [Contact](https://www.plagium.com/en/contact): sales and support enquiries. - [Partnerships](https://www.plagium.com/en/partnerships): integration and reseller programs. - [Terms of use](https://www.plagium.com/en/termsofuse) - [Privacy policy](https://www.plagium.com/en/privacypolicy)