Nemotron 3 Ultra

Name: Nemotron 3 Ultra model facts
Creator: OSMEXO

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

NVIDIA
Family · Nemotron 3 Ultra
Open weights
Text → Text
Reasoning · adjustable
Tools · JSON

Not on OSMEXO yet

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Spec & list price

Context1M

Max output183K

Input / 1M$0.60

Output / 1M$2.404× input

Usage

Tokens / day440.6B▼ 8.4% 7d

Usage rank#12

Requests / day345.2K

Tool calls / req0.14

Per request · 30 days

Avg input10.1K0.7× median

Avg output5190.8× median

Cache hit70%about median

Reasoning share54%about median

Tool-call failures3.8%2.0× median

Consumption

Peak 9.6B 19 OctLow 1.6B 26 SepRank today #12

News & trends

14 mentions this week ▲ 367%this model · videos, posts, articles · 30 days

Trending · 14 days

News · latest from NVIDIA

Accelerate agentic AI with NVIDIA Nemotron models on Amazon EKS and SageMaker HyperPod EKSAWS · 29 Oct
NVIDIA Open Models Advance Europe’s Sovereign Intelligence Across IndustriesNVIDIA · 21 Oct
NVIDIA Nemotron 3.5 Super VL Powers Specialized Agents with Multimodal ReasoningNVIDIA · 15 Oct
Open From Data Center to Desktop: NVIDIA Expands Nemotron Family With Highest Efficiency Super VL and Bolt ModelsNVIDIA · 15 Oct

Speed

Output speed#170/33466 tok/sabout median

Fastest provider125 tok/sbest of 6 providers

First token#1661.02 sabout median

Technical details

Reasoning: on · high
Tokenizer: Other
License: other
Parameters: 561B
Moderation: none
Downloads · likes: 1.4M · 381

Reasoning effort

high · default
medium
none

Request parameters 18

tools
tool_choice
response_format
structured_outputs
reasoning
reasoning_effort
include_reasoning
temperature
top_p
top_k

+8 more

min_p
max_tokens
stop
seed
frequency_penalty
logit_bias
presence_penalty
repetition_penalty

When to use

Best for

Hard reasoning with adjustable effort
Very long document analysis
Enterprise agents with tool calling
Self-hosted large-model deployments

Think twice for

Image or audio input
High-volume simple chat (cheaper options exist)
Latency-critical interactive apps

Research papers

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