Nemotron 3 Ultra is available on HuggingChat

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Summary

NVIDIA's Nemotron 3 Ultra 550B model is now available on HuggingChat.

impressive speed/performance ratio! served by togetherAI :)
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Cached at: 06/05/26, 05:14 PM

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NVIDIA Nemotron 3 Ultra is out.

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NVIDIA has released Nemotron 3 Ultra, a new model designed to power faster and more efficient reasoning for long-running AI agents.

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NVIDIA introduces Nemotron 3 Ultra, a new AI model designed to enable faster and more efficient reasoning for long-running agents.

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NVIDIA announces the upcoming release of Nemotron 3 Ultra this week.

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NVIDIA releases Nemotron-3-Ultra, a 550B-parameter open-weight model with a hybrid architecture combining Mamba-2, MoE, and attention, supporting up to 1M token context and configurable reasoning mode.