No, Xiaomi Poco M3 Pro 5G doesn’t have Android 13. The Xiaomi Poco M3 Pro 5G was launched on June 8, 2021. On the other hand, Android 13 will launch in August-September 2022. So, there is no possibility of Xiaomi Poco M3 Pro 5G having Android 13 as its system operator.
The Android 13 will be launching in August- September of 2022. At the same time, the Xiaomi Poco M3 Pro 5G was released on the market on 8th June 2021, with the Android 11 as its system operator and MIUI 12 as its user interface. So Xiaomi Poco M3 Pro 5G cannot have Android 13.