Model Details
Released
Jun 4, 2026
Context Length
1,048,576
Where is Nemotron-3 Ultra-550b-a55b a perfect fit?
NVIDIA Nemotron 3 Ultra 550B A55B is NVIDIA's largest Nemotron 3 model, built for advanced reasoning, agentic workflows, software engineering, and long-context analysis. It uses a hybrid Mamba-Transformer Mixture-of-Experts architecture with 550B total parameters and 55B active parameters per token.
- Complex mathematical, scientific, and technical reasoning
- Large-scale software engineering and codebase analysis
- Autonomous multi-step agents
- Tool calling and agentic workflow execution
- Long-context document and knowledge-base analysis
- Technical research and enterprise knowledge work
- Code generation, debugging, and refactoring
- Self-hosted deployments where open weights and infrastructure control are important
- Complex mathematical, scientific, and technical reasoning
- Large-scale software engineering and codebase analysis
- Autonomous multi-step agents
- Tool calling and agentic workflow execution
- Long-context document and knowledge-base analysis
- Technical research and enterprise knowledge work
- Code generation, debugging, and refactoring
- Self-hosted deployments where open weights and infrastructure control are important
Quick Model Estimate
Your Nemotron-3 Ultra-550b-a55b Cost Estimate
💰 Total Cost
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for 1000 input + 1000 output tokens
📥 Input (1000 × $0.250000)
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📤 Output (1000 × $2.500000)
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Cost Breakdown
📥 Input
📤 Output
At the last price Perplexity charged, before it stopped on 16th Oct 2026. No longer on offer.
Pricing
No provider we track currently offers Nemotron-3 Ultra-550b-a55b.
No longer offered by
The last prices each provider charged for Nemotron-3 Ultra-550b-a55b before it stopped offering it. These are no longer on offer. Each row links to that provider's price history.
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 Perplexity | 16th Oct 2026Provider stopped offering it | Text | Standard | $0.2500 | $2.5000 | $0.2500 | 1,048,576 tokens | → |
Recent changes
When Nemotron-3 Ultra-550b-a55b was newly listed on a provider, moved to legacy or deprecated, or retired.
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Discontinued
Perplexity stopped offering NVIDIA's Nemotron-3 Ultra-550b-a55b, and no tracked provider now offers it.
Other Models in the Nemotron-3 Family
FAQs about Nemotron-3 Ultra-550b-a55b
What is Nemotron-3 Ultra-550b-a55b's context window?
Nemotron-3 Ultra-550b-a55b has a context window of 1,048,576 tokens.