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ZeroGPT vs Copyleaks: catalog facts
ZeroGPT	Copyleaks
Free The AI detector is offered free on the website.	Paid A commercial service; the homepage directs organisations to request a demo.
Web	Web
Free AI text detection in the browser Also checks images and video for AI generation	Detects both plagiarism and AI-generated text Checks source code for plagiarism
AI detection results are estimates and can be wrong Text is sent to an online service	Aimed mainly at institutions and businesses AI detection results are probabilistic and can be wrong
Web application	Hosted service
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Account 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.