NVIDIA: Nemotron 3 Ultra

nvidia/nemotron-3-ultra-550b-a55b

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...

Context window: 262,144 tokens
Input: text
Output: text
Relay support: Text & documents

Open in workspace →OpenRouter model page

Reference prices & points

Our global markup: 15% · 1 USD = 10,000 points · Price version 0

Billing unit	OpenRouter / USD	Our reference / USD	Points
Input / 1M tokens	$0.6	$0.69	6,900
Output / 1M tokens	$2.4	$2.76	27,600
Cache read / 1M tokens	$0.12	$0.138	1,380

Actual charge = the OpenRouter request cost × the markup locked for that request. Catalogue rates may be routing references; caching, long context, images and audio are charged when used. Listed prices do not mean every capability is available through this relay.

Catalogue time: 2026-11-12T00:15:49.511Z · Live catalogue

View all upstream price fields

{
  "prompt": "0.0000006",
  "completion": "0.0000024",
  "input_cache_read": "0.00000012"
}

Integration & availability

Use /v1/chat/completions for non-streaming, multi-turn conversations. Models marked for vision accept images; documents can be extracted to text in the workspace. Create a site API key and ensure you have enough points and the service is enabled. Provider availability, context and budget limits apply.

Read the API guide → · Back to model directory