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NVIDIA Nemotron 3 Ultra

NVIDIA Nemotron 3 Ultra

The first open frontier model built for agents

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Launched June 5, 2026
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About NVIDIA Nemotron 3 Ultra

NVIDIA Nemotron 3 Ultra is a cutting-edge open-source AI model designed for advanced multi-step agent workflows. Boasting a massive 550-billion parameter mixture-of-experts architecture with a hybrid Mamba-Attention mechanism, it offers impressive processing speeds of over 300 tokens per second and supports a 1 million token context window. This makes it particularly suitable for complex reasoning tasks that demand sustained context management. Positioned as a top-ranked model on the Artificial Analysis Intelligence Index, Nemotron 3 Ultra is tailored for developers and researchers seeking frontier-level performance in open-source economics and multi-agent environments. Its deployment as a microservice via platforms like Hugging Face, OpenRouter, and ModelScope makes integration straightforward, empowering users to build sophisticated AI-powered agent loops with ease. Designed to push the boundaries of open-source AI, it is ideal for those aiming to explore large-scale, multi-step reasoning at an open frontier.

Screenshots

NVIDIA Nemotron 3 Ultra screenshot 1
NVIDIA Nemotron 3 Ultra screenshot 2
NVIDIA Nemotron 3 Ultra screenshot 3

Pros

  • ✓Massive 550B parameters with mixture-of-experts architecture for efficient scaling
  • ✓Exceptional performance with 300+ tokens/sec processing speed
  • ✓Huge 1 million token context window supports complex, multi-step reasoning
  • ✓Open-source availability facilitates customization and community collaboration
  • ✓Built for advanced agent workflows and frontier AI research

Cons

  • ✗Likely requires significant computational resources for optimal performance
  • ✗Complex setup may challenge less experienced users
  • ✗Limited mainstream adoption and user community compared to more established models

Use Cases

1Multi-step agent reasoning in autonomous AI systems
2Large-scale natural language understanding and generation
3Complex decision-making in open-source economics simulations
4Research in frontier AI architectures and attention mechanisms
5Building advanced AI assistants with extended context capabilities
6Open-source AI development projects requiring high scalability

Pricing

Likely available as a free, open-source model with deployment as a microservice. Usage costs may depend on cloud infrastructure or hosting environment, with potential pay-as-you-go pricing for API access on supported platforms.

Quick Info

Category💻 Developer Tools
Upvotes0
Comments1
Launched6/5/2026

Topics

Open SourceDeveloper ToolsArtificial IntelligenceGitHub

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•GPT-4 by OpenAI
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