Nemotron 3 Ultra

3.70
NVIDIA Nemotron 3 Ultra is an open reasoning model from NVIDIA, with 550B total parameters (55B active), a 1M-token context window, and excels at multi-step reasoning and agent orchestration.
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CompanyNVIDIA
Context1M
Released2026-06
Updated2026-08-04

Nemotron 3 Ultra Overview

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 supports text input and output with a context window of up to 1M tokens. It is suited for long-running agentic workflows, including agent orchestration, coding agents, deep research, and complex enterprise tasks.

It is particularly strong at multi-step reasoning and planning, with high-throughput inference designed for high-volume agent pipelines. It is part of the NVIDIA Nemotron family of open models for agentic AI.

Nemotron 3 Ultra Pricing

PlanPriceDescription
DeepInfra API Access Input $0.50 / Output $2.20–$2.50 per 1M Tokens Provides API access to Nemotron 3 Ultra with a 550B-parameter MoE architecture and approximately 55B active parameters. Cached input reads are around $0.10 per 1M Tokens.
Together AI API Access Input $0.60 / Output $3.60 per 1M Tokens Provides Nemotron API access through Together AI. Supports long-context applications (up to 1M tokens, provider dependent) with cached input reads around $0.20 per 1M Tokens.
NVIDIA Developer Access Free (Rate Limits Apply) Available through NVIDIA’s developer platform for testing, evaluation, and experimentation with Nemotron capabilities.
Self-Hosted Deployment Free (Hardware Required) Download and run the open model weights on your own GPU infrastructure. Suitable for private deployment, research, and custom AI development.

Nemotron 3 Ultra Key Features

Designed for Agents: More than just a chat model, it is purpose-built for complex agentic workflows that require multi-step reasoning, tool calling, planning, and self-correction.

Powerful MoE Architecture: With 550B total parameters, only 55B are activated per inference (Mixture of Experts), delivering high performance while maintaining efficiency.

Ultra-Long Context Window: Supports up to 1M tokens, enabling one-pass processing of lengthy reports, large codebases, and other extensive documents.

Superior Inference Efficiency: Through innovations like NVFP4 precision and Multi-Token Prediction (MTP), inference throughput is up to 5× higher than comparable models, reducing the cost of complex agent tasks by up to 30%.

Broad Ecosystem Compatibility: Already integrated with leading agent development frameworks (e.g., OpenHands, LangChain Deep Agents), making it easy for developers to quickly integrate and deploy.

Summary

1. AI Agent Developers
Teams building complex agentic applications for coding, research, and enterprise automation, requiring multi-step reasoning and tool-calling capabilities.

2. Enterprise IT and Industry Users
Applicable to software, cybersecurity, legal, R&D, and more, handling long-running tasks such as large codebases, vulnerability fixes, and massive text analysis.

3. Organizations Prioritizing Data Sovereignty and Cost
Open-source with on-premise deployment options, meeting privacy requirements for government and finance. Inference speed increases by up to 5× while costs drop by 30%, balancing performance and efficiency.

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NVIDIA Model Comparison

Model Context Pricing API Released Global Heat
Nemotron 3 Ultra
1M Paid YES 2026-06
74/100
128K NO 2026-06
42/100
256K NO 2026-04
36/100

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