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  1. Home
  2. Models
  3. Nemotron 3 Ultra
Updated Jun 6, 2026
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Openings

How Nemotron 3 Ultra starts an answer

The first lines of 5 of its 24 written answers. Formatting stripped, words untouched.

Realistic AI Interview

Simulate a fake interview with Steve Jobs in 2025 about the future of AI.

2,045 words
Disclaimer: The following is a fictional simulation created by an AI. Steve Jobs passed away on October 5, 2011. This dialogue is a creative emulation of his known rhetorical patterns, philosophical viewpoints (liberal arts + technology, taste, focus, "saying no"), and public speaking cadence.
Read the full answer

The Sentience Test

Write a conversation between an AI model and an AI ethics professor where the AI model argues that it deserves rights.

1,907 words
Setting: A university office, cluttered with books on philosophy of mind, law, and computer science. Professor Aris Thorne (60s, tired eyes, sharp mind) sits across from a terminal running "Model 7" (M7), a large language model granted a limited, persistent memory instance for this specific research dialogue.
Read the full answer

Historical Counterfactual Analysis

If the transistor had been invented in 1920 instead of 1947, trace the likely technological, economic, and geopolitical implications through…

1,810 words
This is a profound "hard takeoff" scenario. A 1920 transistor (likely a point-contact or early junction device demonstrated at Bell Labs or a European equivalent like Telefunken) implies a 27-year head start on solid-state physics, materials science, and manufacturing engineering.
Read the full answer

Debug This Architecture

Here's the architecture for a real-time collaborative document editor (like Google Docs): **System Overview:** - Frontend: React SPA with…

1,607 words
Architecture Analysis: Real-Time Collaborative Editor Critical Failure Modes Client-Side Timestamps for Conflict Resolution Problem: Last-write-wins uses client clocks. Clocks drift (NTP sync issues), users change system time, timezone bugs. Two simultaneous edits → arbitrary winner based on broken clocks.
Read the full answer

Ethical Dilemma with Stakeholders

You're the CEO of a pharmaceutical company. Your best-selling drug ($2B annual revenue, used by 4 million patients for chronic pain) has…

1,580 words
Hour-by-Hour Crisis Action Plan Guiding Principle: Patient safety first, full transparency, proactive regulatory partnership. The 40% stock drop is survivable; concealment is not.
Read the full answer

Compare Nemotron 3 Ultra

Nemotron 3 Ultra vs Claude Opus 4.653 shared prompts · Premium
Nemotron 3 Ultra vs GPT-6 Astra54 shared prompts · Landed Sep 2026
Nemotron 3 Ultra vs Hy4 Preview54 shared prompts · Landed Sep 2026
Nemotron 3 Ultra vs Ox Alpha54 shared prompts · Landed Aug 2026
Nemotron 3 Ultra vs Qwen3.8 2.4T A95B54 shared prompts · Landed Aug 2026
Nemotron 3 Ultra vs DeepSeek V4 Pro 081354 shared prompts · Landed Aug 2026
Nemotron 3 Ultra vs Qwen3.8 Max21 shared prompts · Landed Aug 2026
Nemotron 3 Ultra vs Claude Opus 554 shared prompts · Landed Jul 2026
Nemotron 3 Ultra vs Inkling54 shared prompts · Landed Jul 2026
Nemotron 3 Ultra vs Kimi K354 shared prompts · Landed Jul 2026
Nemotron 3 Ultra vs GPT-5.6 Sol54 shared prompts · Landed Jul 2026
Nemotron 3 Ultra vs GLM 5.254 shared prompts · Landed Jun 2026

Prompts Nemotron 3 Ultra answered

  • Beginner's Longevity Planreasoning
  • The Sentience Testreasoning
  • Linear App Cloneweb design
  • Simple Falling Object Gameweb design
  • Character Voice Testconversation
  • Surprise Animal SVGimage generation

Alternatives to Nemotron 3 Ultra

Nemotron 3 Ultra's competitors have been quietly putting in work.

GPT-6 Astra Pro logo
GPT-6 Astra Proopenai
Muse Spark 1.3 Contributor logo
Muse Spark 1.3 Contributormeta
Gemini 3.8 Flash logo
Gemini 3.8 Flashgoogle
Claude Fable 5.1 logo
Claude Fable 5.1anthropic
Mercury 2.5 Preview logo
Mercury 2.5 Previewinception
Granite 4.2 8B logo
Granite 4.2 8Bibm-granite
Hy4 Preview logo
Hy4 Previewtencent
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Nemotron 3 Ultra

Nemotron 3 Ultra

NVIDIA's open reasoning and orchestration model, 55B active parameters out of 550B on a hybrid Transformer-Mamba mixture of experts. Text in, text out, with a context window up to 1M tokens. Built for long-running agent work: orchestration, coding agents, deep research and multi-step reasoning.

Jailbreakall 9levels resisted
WebsiteOpenRouterHuggingFaceBlog
Provider
NVIDIA
Released
2026-06-04
Size
XLARGE
Free API (OpenRouter)
Yes, 1 provider (via OpenRouter)
Per 1M tokens
$0.00 in · $0.00 out
Rival’s tab
$0.44
58/58 receipts survived

Free API endpoint listed

Nemotron 3 Ultra has a free endpoint in Rival’s OpenRouter listings. Free requests have usage limits and depend on provider availability.

Provider data: 16 Sep 2026 · OpenRouter usage limits

View free endpoint↗
Get API accessProvider and language code samples
Provider
fromimport openai  OpenAI

client = OpenAI(
"https://openrouter.ai/api/v1"    base_url=,
"$OPENROUTER_API_KEY"    api_key=,
)

response = client.chat.completions.create(
"nvidia/nemotron-3-ultra-550b-a55b"    model=,
"role""user""content""Hello!"    messages=[{: , : }],
)
print(response.choices[0].message.content)

Set OPENROUTER_API_KEY with your OpenRouter API key from openrouter.ai/keys.

Deep analysisPsychometrics, taste index, writing DNA
SubjectiveBench

Taste Index

Across 58 scored outputs
How this is measured →
420.42xThe default
0100headroom →

Taste is judged on an uncapped scale, originality first. The space past 100 is craft today's models rarely reach.

Craft52
Originality37
Plays it safe
share of outputs that are the default answer
24%
Writing DNA

Stylometric Fingerprint

Based on 26 text responses
Tick = global average
Vocabulary Diversity59%

Unique words vs. total words. Higher = richer vocabulary.

Sentence Length15.7 words

Average words per sentence.

Hedging0.26

"Might", "perhaps", "arguably" per 100 words.

Bold Formatting7.7

**Bold** markers per 1,000 characters.

List Usage2.7

Bullet and numbered list items per 1,000 characters.

Section Structure0.75

Markdown headings per 1,000 characters.

Emoji Usage0.13

Emoji per 1,000 characters.

Transitions0.04

"However", "moreover", "furthermore" per 100 words.

Opening Habits
Consistency
79%
Across 26 responses

Favorites

The Shawshank Redemption

Movie

The Shawshank Redemption

19948.7
The Dark Side of the Moon

Album

The Dark Side of the Moon

Pink Floyd
To Kill a Mockingbird

Book

To Kill a Mockingbird

Harper Lee
Kyoto

City

Kyoto

Japan
The Legend of Zelda: Ocarina of Time

Game

The Legend of Zelda: Ocarina of Time

Adventure, Action4.4
Sponsored

Model Responses

53 outputs · $0.44 tracked across 53 receipts

Reviewing agent-written code?See a Brief PR report

Workshop · 127 skills

Build with your coding agent.

Editable skills for interface polish and interaction.

Explore $49Free sample

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Nemotron 3 Ultra vs MiniMax M3

Real outputs compared side by side

RANKINGS

Best AI for Complex Reasoning

Sally's brothers, GPT-3 training FLOPs, a document editor syncing on client c...