NVIDIA released Nemotron 3.5 Lightning, a new open mixture-of-experts agent model, along with NeMo Switchyard for model routing

Model release Provisional 78% confidence first seen 12 August 2026, 06:59

NVIDIA announced the release of Nemotron 3.5 Lightning, an open Mixture-of-Experts model for always-on agent execution. The company also released NeMo Switchyard, an open-source model router intended to route each agent step to the most suitable model to reduce cost and latency in agent workflows.