meteoblue models are based on the NMM (Nonhydrostatic Meso-Scale Modelling) technology, which enables the inclusion of detailed topography (meso-scale = 20-1 km; micro-scale = < 1 km),  ground cover (e.g. forest, fields, rock, water) and surface cover (snow, water) as wells as the initialisation (measurement data at starting of calculation) into the modelling process.
NMM technology is now being used for weather forecasting in North America by NOAA, and for hurricane prediction. 

Meteoblue does extensive research on numerical weather prediction in cooperation with universities and NOAA/NCEP. Many developments are now used in our operational forecasts.

Note that meteoblue does not use the WRF model, which is significantly different from our model.
Comparison of meteoblue NMM forecast with weather station based (GFS-MOS) forecast : click HERE.