Compare software

Copyleaks vs Smodin: catalog facts
Copyleaks	Smodin
Paid A commercial service; the homepage directs organisations to request a demo.	Freemium Free to try, with paid plans for heavier use.
Web	Web
Detects both plagiarism and AI-generated text Checks source code for plagiarism	Several writing tools in one place Accepts uploaded Word, PDF and text files
Aimed mainly at institutions and businesses AI detection results are probabilistic and can be wrong	AI detection scores are estimates and can be wrong Humanizer output may conflict with school or publisher rules
Hosted service	Web application
Closed source	Closed source
License not stated	License not stated
Account needed	No 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.