NVIDIA announced at GTC Taipei (June 1, 2026) the NVIDIA Agent Toolkit including NemoClaw blueprints, Nemotron open models, OpenShell secure runtime, and CUDA-X agent skills. Nemotron 3 Ultra is a 550-billion-parameter mixture-of-experts model delivering up to 5x faster inference and up to 30% lower cost for long-running agentic tasks. Expected availability June 4 via Hugging Face, ModelScope, OpenRouter, and build.nvidia.com as NVIDIA NIM microservices. Enterprise partners include Cadence, CrowdStrike, Palantir, Siemens, and Foxconn.