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Originality.ai vs Winston AI: catalog facts
Originality.ai	Winston AI
Freemium Three free AI scans per day, with paid plans for more.	Freemium Free to start with no credit card required; paid use and sales-led plans are offered.
Web, Browser extension	Web
AI detection plus plagiarism, readability and fact checks Chrome and Firefox extensions with Google Docs support	Detects text from ChatGPT, Claude, Gemini and other models Plagiarism checking in the same tool
Free tier is limited to three scans a day AI detection results are estimates and can be wrong	AI detection results are estimates and can be wrong Full use requires an account
Web application, Browser extension	Web application
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.