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GPTZero vs Quetext: catalog facts
GPTZero	Quetext
Freemium Free scans up to 10,000 characters, with paid upgrades for advanced features.	Freemium A free option and a free Chrome extension, with fuller features on paid plans.
Web, Browser extension	Web, Browser extension
Sentence-level highlighting rather than a single score Writing replay in Google Docs shows how a document was produced	Plagiarism and AI detection in one place Citation generator and grammar checker included
AI detection is probabilistic and can misclassify human writing Free scans are limited in length	AI detection results are probabilistic and can be wrong Text is checked on Quetext's servers
Web application, Browser extension	Web application, Browser extension
Closed source	Closed source
License not stated	License not stated
Not stated if an account is needed	Not stated if an account is 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.