What is NVIDIA Nemotron 3 Ultra?

At Computex 2026 in Taipei on June 1, 2026, NVIDIA CEO Jensen Huang unveiled Nemotron 3 Ultra — the company most advanced open-weights AI model with 500-550 billion parameters .

The model is the crown jewel of a three-tier Nemotron 3 family, designed specifically for advanced reasoning, planning, and agentic workflows — AI systems that plan, execute, and iterate on multi-step tasks with minimal human oversight .

Key Specifications

  • Parameters: 500-550 billion
  • Intelligence Index Score: 48 in US open-weights rankings — outperforming Gemma 4 31B
  • Speed: 300+ output tokens per second
  • Inference Speedup: Up to 5x faster than previous versions
  • Cost Reduction: ~30% lower cost compared to leading alternatives

Nemotron 3 Family

  • Nano: Lightweight variant for smaller workloads
  • Super: 120B parameters, launched March 2026 for mid-range enterprise
  • Ultra: 500-550B parameters — top-tier flagship

Technical Innovation: Latent MoE + NVFP4 Training

NVIDIA built Nemotron 3 family using latent mixture-of-experts (MoE) techniques combined with NVFP4 training. The models activate only relevant portions of their neural networks for any given task — rather than firing up all 500 billion parameters every time — enabling the dramatic speed and cost improvements .

Target Applications

  • Coding and software development
  • Instruction following and task completion
  • AI agents with multi-step planning
  • Search tools and scientific research

Pricing

Open weights — available for download and deployment. Over 50 million downloads of Nemotron 3 family models recorded in the year leading to April 2026 .

Pros

  • 500-550B parameters — among largest open models
  • 5x faster inference via latent MoE
  • 30% lower cost than competitors
  • 300+ tokens per second output
  • Open weights — no vendor lock-in

Cons

  • Requires significant hardware resources
  • Not as optimized for consumer GPUs
  • Deployment complexity for smaller teams
  • Next-generation Nemotron 4 already in development

Who Should Use It?

Perfect for: Enterprises, research institutions, and developers needing state-of-the-art open-weights models for agentic workflows and complex reasoning.

Verdict

Nemotron 3 Ultra positions NVIDIA not just as a chipmaker but as a full-stack AI platform company. With 5x faster inference and 30% lower cost, it's a compelling alternative to proprietary models .

Rating: 4.5/5 - NVIDIA full-stack AI platform.