NVIDIAAnalysisAI ModelsSeptember 15, 2026

NVIDIA explains dense vs. MoE models and when to choose each

NVIDIA's post uses Nemotron 3.5 Lightning to show how a 30B-parameter MoE model activates only 3B parameters per token. Dense models fire every parameter per token; MoE layers hold multiple expert FFNs (8, 64, or 128) with a router network selecting a subset.

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