NVIDIA Nemotron 3 Ultra is now available on Ollama’s cloud as a 550-billion-parameter open model with 55 billion active parameters. NVIDIA says the model is designed for long-running agentic workflows, supports integrations with tools such as Claude, Hermes and OpenClaw, and offers strong accuracy, throughput and cost efficiency compared with other leading open models.

NVIDIA's Nemotron 3 Ultra, a 550-billion-parameter open model optimized for long-running, agentic workflows, is now available on Ollama’s cloud platform. The model delivers leading accuracy and throughput while reducing costs by up to 30% compared to other open models. It supports fast, affordable performance across hundreds of tool calls for tasks like coding, instruction following, and long-context processing.