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Undetectable AI vs Smodin: catalog facts
Undetectable AI	Smodin
Freemium Free to use in the browser, with business plans offered.	Freemium Free to try, with paid plans for heavier use.
Web, Browser extension	Web
AI text detection with sentence-level highlighting Rewriter for stiff or machine-sounding text	Several writing tools in one place Accepts uploaded Word, PDF and text files
AI detection results are estimates and can be wrong Using the humanizer to pass off AI text may breach academic or workplace rules	AI detection scores are estimates and can be wrong Humanizer output may conflict with school or publisher rules
Web application, Browser extension	Web application
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	No account needed
Needs internet	Needs internet
Official website Full listing and sources Checked October 2, 2026	Official website Full listing and sources Checked September 26, 2026

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