https://www.bleepingcomputer.com/news/microsoft/microsoft-word-to-get-bing-powered-plagiarism-checker/

Microsoft announced that the similarity checker tool bundled with the AI-powered Microsoft Editor writing virtual assistant will also be available within Microsoft Word, the company's word processor.

The newly announced Microsoft Word similarity checker feature can already be tested by Microsoft 365 EDU A3 and A5 customers running Office preview builds.