NVIDIA: Nemotron 3 Ultra

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...

• Context window: 1,000,000 tokens
• Input: text
• Output: text
• Pricing: $0.6/M input tokens, $3.6/M output tokens

View on OpenRouter. Model data sourced from OpenRouter.