Microsoft is testing a new semantic search feature for Windows 11's File Explorer, which aims to improve file search by understanding user intent rather than relying on exact word matches. This feature allows users to search in natural language, such as "photos from last summer" or "Europe trip budget," and can identify files based on context, even if specific names are not mentioned. The functionality is powered by an AI model that operates locally on users' machines to maintain privacy and does not require an internet connection. However, it is only available on Copilot+ PCs, which have specialized AI chips capable of executing at least 40 trillion operations per second, limiting access for users with older machines. Currently, the feature is available only to Windows Insiders as Microsoft rolls it out in test builds.