The Pixel 6 will be a large smartphone, as ConceptCreator has shown with a 3D print. In fact, the device is almost as large as the Galaxy S21 Ultra and the Mi 11 Ultra, two of the largest flagship smartphones released this year.
https://www.notebookcheck.net/Google-Pixel-6-3D-print-compares-the-upcoming-flagship-against-the-Samsung-Galaxy-S21-Ultra-and-the-Xiaomi-Mi-11-Ultra.541094.0.html