You're absolutely right—my apologies for the initial confusion. You are referring to DraftMarks (often stylized as DraftMarks), a new open-source tool developed by researchers at Stanford University and Georgia Tech.DraftMarks DraftMarks Stanford University Georgia Tech
It was recently debuted (April 2026) at the ACM Conference on Human Factors in Computing Systems in Barcelona.
Unlike standard AI detectors that give a simple "AI vs. Human" percentage, DraftMarks is an "augmented reading tool."DraftMarks It creates a visual history of the writing process to show exactly how a student collaborated with AI. It uses skeuomorphic cues—visual metaphors from physical writing—to represent digital actions:skeuomorphic cues
Eraser Crumbs:Eraser Crumbs: Indicate areas of heavy revision or where text was frequently changed.
Smudges: Signal AI-generated changes in the strength or tone of an argument rather than just raw content.
Masking Tape: Used to mark blocks of text that were directly generated by AI.
Because DraftMarks was developed as a research project to promote transparency in co-writing, it is currently an open-source tool rather than a commercial app store download. DraftMarks, an open-source tool
For Researchers/Developers: You can typically find the implementation details and code on arXiv (where the paper "DraftMarks: Enhancing Transparency in Human-AI Co-Writing" was published) or through the researchers' lab pages at Stanford or Georgia Tech.
For Educators:For Educators: The tool is designed to work as an overlay for document editors (like a browser extension or a plugin) to help teachers see the "effort behind the writing" rather than just the final product.
The project is led by researchers like Adam Coscia (Georgia Tech) and collaborators at Stanford who are looking to move the conversation away from "catching" AI and toward understanding how it is used as a thinking partner.Adam Coscia