WLAN Pi OS is built on top of the official Raspberry Pi OS. WLAN Pi OS includes specific customizations for the WLAN Pi Pro hardware and comes pre-loaded with a full suite of tools for Wi-Fi professionals. It runs on the WLAN Pi Pro hardware but also on any Raspberry Pi hardware that is 64-bit compatible.
Raspberry Pi OS is a free operating system based on Debian, optimized for the Raspberry Pi hardware, and is the recommended operating system for normal use on a Raspberry Pi. The OS comes with over 35,000 packages: precompiled software bundled in a nice format for easy installation on your Raspberry Pi.