NVIDIA: Nemotron-3 Ultra 550B A55B
1M
text
text
Supported
About this model
NVIDIA Nemotron-3 Ultra 550B A55B is a frontier-scale large language model from NVIDIA, designed for strong agentic, reasoning, and conversational capabilities. It employs a hybrid Latent Mixture-of-Experts (LatentMoE) architecture, utilizing interleaved Mamba-2, MoE, and Attention layers, alongside Multi-Token Prediction (MTP) for faster inference. With a 1-million-token context window and a configurable reasoning mode, it excels at complex autonomous agents, long-context analysis, and deep research workflows.
Input modalities
text
Accepted as model input
Providers
Available routing options for this model through OneInfer.
Input tokens
$0.600 / 1M tokens
Output tokens
$3.600 / 1M tokens
Routing
OneInfer optimized
Pricing
Current OneInfer pricing for this model.
| Usage | Price |
|---|---|
| Input tokens | $0.600 / 1M tokens |
| Output tokens | $3.600 / 1M tokens |
| Cached input tokens | $0.200 / 1M tokens |
Performance & Benchmarks
Independent evaluations and live cluster operational metrics
- • Optimized for unified API inference
- • High prompt fidelity across structured outputs
General inference, enterprise agent workflows, and conversational pipelines.
Based on data from Artificial Analysis. This analysis was generated by OneInfer and does not represent the views or endorsement of Artificial Analysis.
API Guide
- 1
Generate your access token
Use your API key to generate the JWT access token required by the Models API.
- 2
Add the JWT token
Copy the generated JWT token and replace
JWT_TOKENin the example below. - 3
Check your credits
If your balance is too low, before calling the model.
- 4
Run the API example
Choose your preferred language, copy the example, and send your first model request.
curl https://api.oneinfer.ai/v1/ula/chat/completions \ -H "Authorization: Bearer $JWT_TOKEN" \ -H "Content-Type: application/json" \ -d '{ "model": "nvidia/Nvidia-Nemotron-3-Ultra-550B-A55B", "messages": [ { "role": "user", "content": "Hello!" } ] }'
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