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Undetectable AICopyleaks
Freemium

Free to use in the browser, with business plans offered.

 Paid

A commercial service; the homepage directs organisations to request a demo.

Web, Browser extension Web
  • AI text detection with sentence-level highlighting
  • Rewriter for stiff or machine-sounding text
  • Detects both plagiarism and AI-generated text
  • Checks source code for plagiarism
  • AI detection results are estimates and can be wrong
  • Using the humanizer to pass off AI text may breach academic or workplace rules
  • Aimed mainly at institutions and businesses
  • AI detection results are probabilistic and can be wrong
Web application, Browser extension 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

Checked October 2, 2026

Checked September 26, 2026

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