NVIDIA Nemotron 3.5 Lightning: New Open-Source Agent Model, Benchmarks & How to Run It NVIDIA Nemotron 3.5 Lightning is a 30B mixture-of-experts model with 3B active parameters, designed for high-volume execution in long-running AI agents. Official NVIDIA material describes a hybrid Mam... AI Agents Nemotron 3.5 Lightning Nvidia Open Source Models 12-Aug-2026 0 128