2400×1600
2400 x 1600 is the native screen resolution of the 14.4-inch Surface Laptop Studio. Just like the rest of the Surface family, it has a 3:2 aspect ratio display. It has a total fairly amount of 3.8 million pixels with the same respectable 201 PPI pixel density, and 150% default scaling as the regular Surface Laptop devices.
You can learn more about screen information for all Surface devices from the Surface display comparison table we made here.