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Nemotron 3 Ultra 550B A55B

Canonical ID: thinkingmachines/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16:peft:262144

Largest Nemotron 3 model for maximum open-weight reasoning and agent accuracy

Reasoning: Yes Tool use: Yes Open weights

Overview

text
Family
nemotron
Release date
2026-06-04
Last updated
2026-06-04
Input modalities
text
Output modalities
text

Pricing and Limits

Token pricing

Input
$1.8/1M
Output
$6.225/1M
Cached input
N/A
Currency: USD

Context and output

Context window
262,144
Max output tokens
262,144
Qualified ID
thinkingmachines/nvidia/NVIDIA-Nemotron-3-Ultra-550B-A55B-BF16:peft:262144

Model Summary

Nemotron 3 Ultra 550B A55B is a model listing in the Thinking Machines provider catalog. It is categorized under the nemotron family.

The model supports text modalities across input/output paths. Reported context capacity is 262,144. Pricing is listed at $1.8/1M input and $6.225/1M output.

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