Popular leakster @onleaks has revealed renders of both the smartphones. The Google Pixel measures 143.8 x 65.9 x 7.3 mm ~ 8.5 mm. The Google Pixel XL has dimensions of 154.7 x 75.7 x 7.3 ~ 8.5 mm.
Both the phones will have Snapdragon 820 processor, 4GB RAM and 32GB of internal storage space. There are chances that it could have 64GB ROM. Both the handsets will run on Android 7.1 Nougat OS out of the box. Another thing common is 8MP front and 12MP rear snappers.
The Pixel will feature a 5-inc display with 1920 x 1080 pixels resolution and 2770 mAh battery. The Pixel XL on the other hand has a larger 5.5-inch display with 2560 x 1440 pixels QHD resolution and 3450 mAh battery capacity.