[orbital-decay]

Inseparable, routing is done per token in a statistically optimal way, not per request on the knowledge domain basis.

[viraptor]

Sure, it's done per token, but the question is: how much do the knowledge domains match up with experts. I could not find hard data on this.

[boroboro4]

Check out DeepSeek v3 model paper. They changed the way they train experts (went from aux loss to different kind expert separation training). It did improve experts domain specialization, they have neat graphics on it in the paper.