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Copyleaks vs ZeroGPT: catalog facts
Copyleaks	ZeroGPT
Paid A commercial service; the homepage directs organisations to request a demo.	Free The AI detector is offered free on the website.
Web	Web
Detects both plagiarism and AI-generated text Checks source code for plagiarism	Free AI text detection in the browser Also checks images and video for AI generation
Aimed mainly at institutions and businesses AI detection results are probabilistic and can be wrong	AI detection results are estimates and can be wrong Text is sent to an online service
Hosted service	Web application
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 September 26, 2026

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