A free upgrade from Windows 10 to Windows 11 remains available, though Windows 10 licenses can no longer be purchased from Microsoft or third-party retailers. Windows 11 Home costs $139.99, and Windows 11 Pro costs $199.99. The interface comparison results in a tie: Windows 11 features rounded corners, a more uniform Settings interface, Snap Layouts for app window arrangements, and a Widgets feature for news and weather, while Windows 10 retains the Timeline feature. Windows 11 also adds File Explorer improvements including redesigned icons, a simplified toolbar and context menu, support for RAR and 7-Zip archives, and tabs. App compatibility is nearly identical between the two operating systems.