Nvidia's best model is now live

Nvidia's best model is now live

After pre-announcing Nemotron 3 Ultra, a 550-billion-parameter open-weight mixture-of-experts model, at Computex, Nvidia on Thursday released the model on platforms like Hugging Face, ModelScope, OpenRouter (with a free endpoint), and build.nvidia.com.  The new model uses the same latent mixture-of-experts technique and Mamba 2 architecture as the other models in the Nemotron 3 family, bringing the number of active parameters down to 55 billion.…

NVIDIA Nemotron 3 Ultra: Savvy 550B Model for Agentic AI in 2026

A new benchmark for enterprise agentic AI has arrived. NVIDIA Nemotron 3 Ultra is a 550-billion-parameter Mixture-of-Experts model built specifically for agentic AI systems that need to reason across hundreds of turns without burning through compute budgets. The model is available now on Amazon SageMaker JumpStart with one-click deployment. This is not a general-purpose chatbot […]

How NVIDIA's NeMo Tron 3 Ultra Achieves 5X Faster AI Speeds

The NeMo Tron 3 Ultra, NVIDIA’s latest AI model, represents a significant leap in artificial intelligence capabilities. With a staggering 550 billion parameters, it employs a hybrid transformer-Mamba architecture to deliver exceptional performance in real-time applications and instruction-following tasks. As highlighted by Prompt Engineering, the model’s Mixture-of-Experts (MoE) design activates 55 billion parameters per token, […] The post How …

NVIDIA AI Releases Nemotron 3 Ultra: An Open 550B Mixture-of-Experts Hybrid Mamba-Transformer for Long-Running Agents

NVIDIA has released Nemotron 3 Ultra, the largest model in its Nemotron 3 family. It targets a specific problem: long-running agents that plan, call tools, and reason across many turns. As agents run longer, token counts grow and inference cost climbs. Nemotron 3 Ultra is designed to keep accuracy high while making that inference faster and cheaper. What is Nemotron 3 Ultra Nemotron 3 Ultra is a 550 billion total parameter Mixture-of-Experts (Mo…