Nemotron 3 Ultra: Is NVIDIA a Model Company Now? @engineerprompt
Nemotron 3 Ultra: Is NVIDIA a Model Company Now?  @engineerprompt
Uploaded June 2026 | Updated September 2026, 2 weeks ago
NVIDIA just released Nemotron 3 Ultra, a 550B mixture-of-experts model built on a hybrid Transformer-Mamba architecture, and it's a clear sign of how far NVIDIA has moved beyond being just a hardware company. In this video I break down what the model is actually good at and where it still lags, the other open-weight models NVIDIA is shipping across speech, retrieval, robotics, and world models, and the business logic behind giving it all away for free. I'll also walk through how to access Nemotron 3 Ultra via NVIDIA's API, including thinking, reasoning budgets, and tool calling.

Thanks to @NVIDIADeveloper for early access.

Blog: nvda.ws/3PTkjlQ
Hugging Face: huggingface.co/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-NVFP4
Tech Report: research.nvidia.com/labs/nemotron/files/NVIDIA-Nemotron-3-Ultra-Technical-Report.pdf
Cookbook: github.com/NVIDIA-NeMo/Nemotron/tree/main/usage-cookbook/Nemotron-3-Ultra

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Nemotron 3 Ultra: Is NVIDIA a Model Company Now?

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