For the ones who might be interested, Yr.no uses the ECMWF (European weather model) as their main data source. This model scores the best on benchmarks of the global weather models (available for the whole world), but AI models are catching up on some parameters. Still, there are local weather models available with a much higher resolution (these are regional and only have forecasts up to a couple days). Examples are ICON-D2, Arome, Harmonie for parts of Europe, and HRRR for the US. I'm not sure which apps use these models though.

I like graphs that compare various models, that gives you information on the confidence of the prediction, depending on how well they agree. For example https://www.wetterdienst.de/Deutschlandwetter/Berlin/Vorhers...

https://kachelmannwetter.com/ has data from dozens of models, but only in separate maps I think.