Grammarly Authorship: what the report shows, its limits, and the alternatives

Grammarly Authorship is the best-known way to show how you wrote something: it records your writing as it happens and turns it into a report you can share. It's free, it works where most students already write, and it doesn't try to guess whether text “sounds like AI”. This guide explains what the report shows, where it falls short, what to watch if you write in English as a second language and use editing tools, and the alternatives worth knowing.

What Grammarly Authorship is

Grammarly launched Authorship in August 2024 to give students and teachers transparency about the writing process (Grammarly, 2024). It works in Google Docs through the Grammarly extension for Chrome or Edge, in the Microsoft Word desktop app, and in Grammarly's own editor. While it's on, it categorizes the source of text as it enters your document; afterwards you can generate a report and share it as a link (Grammarly Support).

It is not an AI detector. A detector reads finished text and estimates whether it looks machine-written; Authorship records where each part of the text came from while you write. That difference matters if you're a non-native writer, because detectors are the tools shown to misjudge careful second-language English — see why detectors flag human writing.

What the report labels

According to Grammarly's documentation, the report distinguishes text that was:

• typed directly into the document;
• copied from a browser-based source — a website or a generative AI tool such as ChatGPT or Claude;
• copied from an unknown source, such as a desktop app or a private browsing window;
• generated by Grammarly's AI;
• typed by you and then modified with Grammarly's on-demand AI rephrasing.

A replay feature shows your typing and editing history from start to finish, and you can leave the replay out of a report you share (Grammarly Support).

Is Grammarly Authorship free?

Yes, the core feature is. Grammarly's free plan includes tracking, unlimited reports and sharing, and the breakdown of text typed by you. Paid plans add analytics on text copied from sources, including the share that came from generative AI, and cards that point to the specific passages (Grammarly Support).

Its limits

• It only knows what happened while it was on. Text written elsewhere and pasted in shows up as copied, even if you wrote it.
• It isn't perfect. Grammarly says it may not capture every case accurately, needs clipboard permission to attribute sources, and becomes less reliable in Word documents longer than 20 pages (Grammarly Support).
• It can't show where ideas came from. Like any process record, it shows how text reached the page, not whether someone retyped words from elsewhere.

If you write in a second language and use editing tools

Many non-native writers draft in English and then use a tool to fix grammar and phrasing. That's where Authorship needs a little care:

• Text rephrased with Grammarly's AI is labelled as modified by AI. Whether that's acceptable depends entirely on your course. Some institutions treat AI-powered editing as generative AI — Notre Dame, for example, classified tools like Grammarly that way under course AI bans (Inside Higher Ed, 2024).
• Text you paste back from any other website — including a proofreading tool like ours — counts as copied from a browser-based source, because that's where it came from.

Grammarly Authorship alternatives

• Google Docs version history is already recording if you write in Docs. Anyone with edit access can browse earlier versions, and you can name up to 40 versions per document (Google Docs Help). Our guide to Google Docs version history and Draftback shows how to use it as evidence.
• Word version history works only for files stored in OneDrive or SharePoint (Microsoft Support) — a file saved only on your laptop has none.
• Draftback is a Chrome extension that replays the revision history of any Google Doc you can edit. It runs locally, is deliberately not an AI detector, and needs a paid subscription (Draftback).
• Revision History is a Chrome extension used mainly by teachers in Google Docs and Slides, with replay, copy-paste detection and editing analytics (Denison University, 2026).
• Turnitin Clarity is a writing space your school has to buy. Instructors see your revision timeline and which text was pasted or typed (Turnitin, 2025). More in our Turnitin Clarity guide.

Which one should you use?

If your course names a tool, use that one. If not, the simplest strong evidence is free: write in Google Docs, or in Word with the file saved to OneDrive, from the first outline to the final draft. Add Grammarly Authorship if you want a shareable report, and keep your notes and sources. If you're ever asked to prove your work, our step-by-step evidence guide shows how to put it together.