What is Mixture-of-Depths, and how does it differ from Mixture-of-Experts?
Both are conditional compute, but one scales parameters and the other scales depth. The signal is knowing which axis each routes along and why that shifts the FLOP story. Here is the sharp version.
Updated Sep 2026 · Grounded in real GenAI, LLM, and AI/ML engineering interview loops and written to a senior-engineer editorial bar.
Both are conditional compute, but one scales parameters and the other scales depth. The signal is knowing which axis each routes along and why that shifts the FLOP story. Here is the sharp version.
Lead with where the obvious approach breaks, because that is the judgment they are screening for — most candidates jump straight to the happy path and lose the room.
Then walk the failure back through the pipeline in order, naming the one metric the customer's exec sponsor actually cares about before you propose the fix.
