GPTZero: AI Detection & Writing Replay

This extension, formerly marketed as Origin by GPTZero, is the in-browser arm of GPTZero's writing-integrity platform. It is aimed at teachers, students and researchers who need to know not only whether text looks machine-written but how a document took shape. Installed on Chrome, it works inside Google Docs and other writing surfaces, running detection and feedback where the work actually happens rather than in a separate dashboard.

The Google Docs experience adds four main capabilities: live AI-detection checks as you type, customisable written feedback inserted as Google Docs comments, a writing video-replay report with typing-pattern analysis, and bibliography/citation checking with research-focused fact checks. The replay feature reconstructs the writing process — showing edits, pastes and writing bursts — and in multi-editor documents it can indicate how much each contributor wrote, which is useful when several people collaborate on one file. Because it constantly screens large pastes as well as natural typing patterns, it doubles as a plagiarism-style review aid.

GPTZero Inc. states that the extension supports enterprise-grade security and privacy controls with SOC2 and FERPA compliance, and it has been cited by outlets including The New Yorker, The New York Times and Harvard Business Review. The extension itself is free to install from the Chrome Web Store; the wider GPTZero platform offers additional paid features. It is an independent third-party product and is not produced or endorsed by Google or OpenAI.