What is Nemotron 3 Ultra?

NVIDIA’s Nemotron 3 Ultra is a cutting-edge, open-weight large language model engineered specifically to drive high-performance, long-running AI agents. Utilizing a sophisticated hybrid Mamba-Attention Mixture-of-Experts (MoE) architecture, it balances massive scale with operational efficiency.

Why Founders Need It

As the AI market shifts from simple chatbots to complex, multi-step agentic workflows, inference cost and speed become the primary bottlenecks. Nemotron 3 Ultra solves this by offering 5.9x higher throughput than standard open LLMs and a massive 1-million-token context window, making it ideal for deep research, automated coding, and complex enterprise orchestration.

How to Use It

  • Integration: Deploy via NVIDIA NIM microservices, Amazon SageMaker JumpStart, or utilize via OpenRouter APIs.
  • Development: Leverage the open-weight access for fine-tuning on proprietary enterprise data.
  • Efficiency: Utilize native speculative decoding through its Multi-Token Prediction (MTP) layers to slash latency in agentic feedback loops.

Pricing & Availability

The model is released under the OpenMDW-1.1 license. While free in several open-source environments, professional API usage through providers typically costs approximately $0.60 per 1M input tokens and $2.60 per 1M output tokens.

Competitive Landscape

Nemotron 3 Ultra positions itself as a direct competitor to Qwen-3.5 and GLM-5.1. Unlike closed-source models like Claude or GPT, this offers the transparency and customizability required for mission-critical, self-hosted infrastructure.