Initial release of Nemotron 3 Ultra, a 550B-parameter MoE model with 55B active parameters, hybrid Transformer-Mamba architecture, and 1M context window designed for agentic workflows.
First release of Nemotron-3-Ultra, NVIDIA's 550B parameter (55B active) frontier model with hybrid LatentMoE architecture combining Mamba-2, MoE, and Attention layers. Features 1M token context and toggle-able reasoning capabilities.
Nvidia has released Nemotron 3 Ultra, a 550-billion parameter mixture-of-experts model with 55 billion active parameters and support for up to 1 million token context windows. The model uses a hybrid Transformer-Mamba architecture and is designed specifically for long-running agentic workflows including agent orchestration, coding agents, and complex enterprise tasks.
NVIDIA released Nemotron-3-Ultra-550B-A55B-NVFP4, a 550B parameter model with 55B active parameters, featuring a 1M token context window and configurable reasoning mode. The model uses a hybrid LatentMoE architecture combining Mamba-2, Mixture-of-Experts, and Attention layers with Multi-Token Prediction, trained with NVIDIA's NVFP4 quantization-aware approach.
Nvidia has released Nemotron 3 Ultra, a 550B parameter mixture-of-experts model with 55B active parameters and a 1M token context window. The model uses a hybrid Transformer-Mamba architecture and is available for free through OpenRouter, targeting agentic workflows and multi-step reasoning tasks.