The Realme 9 Pro is one of the best budget phones these days. It’s quite amazing for the Realme 9 Pro to have the Android 12 as it has almost all the best features any advanced Android phone can have.
The Android 13 isn’t even launched yet. The Android 13 will probably be launched in the Autumn of 2022. The Realme 9 Pro was launched on February 23, 2022. And it’s not upgradable to Android 13. Cause the system, and the UI is based on Android 12.
The Realme 9 Pro has Android 12 as its operating system and Realme UI 3.0.