Nemotron 3 Ultra 550B A55B API
About
Build advanced reasoning agents with Nemotron 3 Ultra 550B A55B, a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $0.50/1M input and $2.50/1M output tokens, native tool calling support, open weights architecture. Access Nemotron 3 Ultra 550B A55B via the Nvidia API with up to 66K output tokens.
Capabilities
Input Modalities
text
Output Modalities
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Reasoning
Yes
Structured Output
Yes
Tool Use
Yes
WeightsOpen
Limits
Context Window
1.0M
Tokens
Input Limit
1.0M
Tokens
Max Output
66K
Tokens
Pricing
Standard (per 1M tokens)
Input
$0.50
Output
$2.50
Caching (per 1M tokens)
Read
$0.15
Frequently Asked Questions
Nemotron 3 Ultra 550B A55B by Nvidia costs $0.50 per 1M input tokens and $2.50 per 1M output tokens. Cached reads cost $0.15 per 1M tokens.
Model Details
ID
nvidia/nemotron-3-ultra-550b-a55b
Provider
NvidiaFamily
nemotron
Release Date
Jun 4, 2026
Knowledge Cutoff
N/A
API Integration
NPM Package
@ai-sdk/openai-compatible
Environment Variables
NVIDIA_API_KEY
API Base URL
https://integrate.api.nvidia.com/v1