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Copyleaks vs Pangram: catalog facts
Copyleaks	Pangram
Paid A commercial service; the homepage directs organisations to request a demo.	Freemium Free credits and three free image scans per day, with paid plans for more use.
Web	Web, Browser extension
Detects both plagiarism and AI-generated text Checks source code for plagiarism	Detects AI-generated and AI-assisted text Separate image detection for AI-generated pictures
Aimed mainly at institutions and businesses AI detection results are probabilistic and can be wrong	Free use is limited by credits and daily scans Detection results are probabilistic and can be wrong
Hosted service	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
Account needed	Not stated if an account is needed
Needs internet	Needs internet
Official website Full listing and sources Checked September 26, 2026	Official website Full listing and sources Checked October 1, 2026

Catalog facts only. Anything “not stated” is unconfirmed. Check full listings for details.