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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 changes the FLOP story. Here is the sharp version.

Updated Aug 2026 · Grounded in real Applied AI Engineer 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 changes the FLOP story. Here is the sharp version.

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