Nvidia Launches NeMo Switchyard to Cut AI Agent Costs via Intelligent Model Routing

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Nvidia has released NeMo Switchyard, an open-source routing SDK designed to automatically direct tasks within AI agent workflows to the most cost-appropriate model. Alongside it, the company launched Nemotron 3.5 Lightning, a 30-billion-parameter open mixture-of-experts model with only 3 billion active parameters. Switchyard aims to solve a common problem in agent development: routing simpler steps to cheaper models while reserving expensive frontier models for tasks that genuinely require advanced reasoning. Nvidia claims the system can reduce costs to roughly one-third of using Claude Opus 4.8 alone, with partner Ramp reporting 58% cost savings and 33% faster runtime on internal benchmarks. These figures come from vendor and partner testing, and the system's real-world reliability will depend heavily on how well quality is evaluated alongside cost and latency.

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