OpenRouterNemotron 3 Ultra 550B A55B model ID, context window & pricing
nemotron
Quick facts
Model ID nvidia/nemotron-3-ultra-550b-a55b
Source OpenRouter
Context Window 262144
Pricing $0.50 input / $2.50 output per 1M tokens
Capabilities tool calling, reasoning, structured output, temperature control, open weights
Model overview
Nemotron 3 Ultra 550B A55B is an AI model from OpenRouter with 262144 token context window and text input support.
Published pricing is $0.50 input and $2.50 output per 1M tokens.
- Workloads that use text inputs with text outputs.
- Agent and tool workflows that need function calling.
- Reasoning-heavy prompts where stepwise problem solving matters.
Model ID nvidia/nemotron-3-ultra-550b-a55b
Provider OpenRouter
Family nemotron
Status -
Knowledge Cutoff -
Release Date 2026-06-04
Input Modalities text
Output Modalities text
Context Window 262144
Input Limit -
Output Limit 16384
Tool Calling Yes
Reasoning Yes
Structured Output Yes
Temperature Control Yes
Open Weights Yes
Input Cost / 1M tokens $0.50
Output Cost / 1M tokens $2.50
Reasoning Cost / 1M tokens -
Cache Read Cost / 1M tokens $0.15
Cache Write Cost / 1M tokens -