nemotron-3-ultra

open-weight550B / 55B

NVIDIA Nemotron 3 Ultra is built for high-throughput reasoning and long-running agent workflows.

Context
262K

Capabilities

Reasoning & Interaction
Reasoning
Tool Calling
Infrastructure
Streaming
Fine-tuning

Details

Provider Ollama
Creator NVIDIA
Family—
Licenseopen-weight
Status—
Typechat
Input modalitiestext
Output modalitiestext
Open weightYes
Parameters550B / 55B
Architecture—
Context window262K tokens
Max input—
Max output—
Reasoning tokensYes
Knowledge cutoff—
Release date
Sourceofficial

Tools

Function Callingfunction_calling
Call external functions and APIs

API

GET/v1/models/ollama/nemotron-3-ultra