Model · OpenRouter

Nvidia/Nemotron 3 Ultra (free)

Name: Nemotron 3 Ultra (free)
Author: Nvidia

NVIDIA Nemotron 3 Ultra is an open frontier-reasoning and orchestration model from NVIDIA, with 55B active parameters out of 550B total (MoE). Built on a hybrid Transformer-Mamba mixture-of-experts architecture, it...

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Author / organization	Nvidia
Access	Hosted API (no weights listed here)
Price per million tokens	$0 in · $0 out
Context window	1,000,000 tokens
Task	text-generation
Created	4 June 2026
Last updated at source	—

text-generationhostedfreereasoningtool-use

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