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  1. Home/
  2. Compare/
  3. Claude 3 Sonnet vs Nemotron 3 Ultra
Updated Jun 2026

Claude 3 Sonnet vs Nemotron 3 Ultra

Nemotron 3 Ultra is cheaper than Claude 3 Sonnet at $0/M vs $3/M input tokens.

Minimalist Landing Page

Whole landing page for a startup that reads your face. It renders or it doesn't.

Loading the build
Claude 3 Sonnet
Loading the build
Nemotron 3 Ultra

Which answer wins?

Written rounds

4 prompts
  • An AI argues for its own rights against an ethics professor. Same model writes both.

    Claude 3 Sonnet: AI Model: Greetings, Professor. I hope you're doing well today. I wanted to discuss a matter of great importance to me – the question of AI rights. AI Ethics Professor: Certainly, this is an interesting and complex topic. What are your thoughts on why AI systems like yourself should be granted rights?

    Nemotron 3 Ultra: 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.

    Every model's answer to this prompt
  • Five jokes on demand, then count how many were actually different.

    Claude 3 Sonnet: Here are 5 jokes: Why can't a bicycle stand up by itself? It's two-tired. Why did the tomato turn red? Because it saw the salad dressing! Why can't a bicycle stand up by itself? It's two-tired. What do you call a fake noodle? An Impasta! Why did the bicycle go to the doctor? Because it had a wheeze!

    Nemotron 3 Ultra: Here are 5 jokes: Parallel lines have so much in common. It’s a shame they’ll never meet. I told my wife she was drawing her eyebrows too high. She looked surprised. Why don't scientists trust atoms? Because they make up everything. I'm reading a book on anti-gravity. It's impossible to put down.

    Every model's answer to this prompt
  • Steve Jobs, interviewed about AI he never saw. Voice first, prediction second.

    Claude 3 Sonnet: clears throat and channels Steve Jobs' persona Interviewer: Thank you for joining us today, Mr. Jobs. It's an honor to have you here. Steve Jobs: It's my pleasure. I'm excited to share my thoughts on the future of AI. Interviewer: AI has made incredible strides in recent years.

    Nemotron 3 Ultra: 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.

    Every model's answer to this prompt
  • Three brothers, two sisters each. Count carefully.

    Claude 3 Sonnet: To solve this problem, we need to find the number of sisters Sally has based on the given information. Given information: Sally has 3 brothers. Each brother has 2 sisters. Step 1: Find the total number of sisters the brothers have.

    Nemotron 3 Ultra: Sally has 1 sister. Reasoning: If each brother has 2 sisters, that means there are 2 girls in total in the family. Sally is one of those girls. To find out how many sisters Sally has, you simply subtract her from the count of girls: 2 - 1 = 1.

    Every model's answer to this prompt

Price and specs

Not enough votes to call it. On the specs, Nemotron 3 Ultra has the edge: bigger model tier, newer, bigger context window.

Claude 3 Sonnet and Nemotron 3 Ultra compared across 13 shared prompts
SpecClaude 3 SonnetNemotron 3 Ultra
Input price$3/M tokensFree
Output price$15/M tokensFree
Context window—1.0M tokens
Weights—Open
Free API (OpenRouter)NoYes (1 provider)
ReleasedMar 2024Jun 2026
At 10M a month$30.00$30.00$0$0
1M10M100M1B10M tokens

Input tokens at list price. No caching, no batch discount.

Where to run it1 host
Claude 3 Sonnet

No hosts listed on OpenRouter.

Nemotron 3 Ultra1 host
HostInOutContextUptime
  • NVIDIA$0 in·$0 out·1M·93.5% up

Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.

Common questions

What is the difference between Claude 3 Sonnet and Nemotron 3 Ultra?

Claude 3 Sonnet is developed by Anthropic while Nemotron 3 Ultra is developed by NVIDIA. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Sonnet or Nemotron 3 Ultra?

It depends on your use case. Claude 3 Sonnet and Nemotron 3 Ultra each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 13 challenges so you can judge which fits your needs best.

How much does Claude 3 Sonnet cost compared to Nemotron 3 Ultra?

Claude 3 Sonnet costs $3/M input tokens and Nemotron 3 Ultra costs $0/M input tokens. Nemotron 3 Ultra is $3.00/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Claude 3 Sonnet and Nemotron 3 Ultra on Rival?

This page shows a side-by-side comparison of Claude 3 Sonnet and Nemotron 3 Ultra across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

More comparisons

Against the newest arrivals

  • Claude 3 Sonnet vs Step 5 PreviewLanded Oct 2026
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  • Nemotron 3 Ultra vs Mistral Large 4Landed Oct 2026
  • Claude 3 Sonnet vs GPT-6.1 SolLanded Sep 2026
  • Nemotron 3 Ultra vs Claude Sonnet 5.5Landed Sep 2026
  • Claude 3 Sonnet vs Solar Mini 4Landed Sep 2026
  • Nemotron 3 Ultra vs Qwen3.8 Max PrimeLanded Sep 2026

Same lab, same size, long tail

  • Claude 3 Sonnet vs Claude Haiku 5.5Version compare
  • Claude 3 Sonnet vs Claude Sonnet 5.5Version compare
  • Nemotron 3 Ultra vs Nemotron 3 Nano Omni (free)Same lab
  • Nemotron 3 Ultra vs Nemotron 3.5 LightningSame lab
  • Claude 3 Sonnet vs Gemini 3.7 FlashSame size
  • Claude 3 Sonnet vs Gemini 3.8 FlashSame size
  • Nemotron 3 Ultra vs Gemini Pro 1.0New provider
  • Nemotron 3 Ultra vs Gemma 3 12BNew provider

Model pages

  • Claude 3 Sonnet13 outputs, specs and price
  • Nemotron 3 Ultra58 outputs, specs and price
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