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  5. Claude 3 OpusvsNVIDIA Nemotron 3 Super (free)
Updated Mar 2026

Claude 3 OpusvsNVIDIA Nemotron 3 Super (free)

NVIDIA Nemotron 3 Super (free) has a larger context window than Claude 3 Opus (262K tokens vs 200K tokens).

Claude 3 Opus and NVIDIA Nemotron 3 Super (free) compared across 12 shared prompts
SpecClaude 3 OpusNVIDIA Nemotron 3 Super (free)
Input price$15/M tokens—
Output price$75/M tokens—
Context window200K tokens262K tokens
ParametersNot disclosed12B active (120B total)
Weights—Open
Free API (OpenRouter)NoYes (1 provider)
ReleasedMar 2024Mar 2026
Side by side

Same prompt, both answers

Opening lines from 3 of the 12 prompts both answered. Formatting stripped, words untouched.

Generate a Stand-Up Routine

Write a 3-minute stand-up comedy routine that isn't based on puns.

Claude 3 Opus390 words
Here's a 3-minute stand-up comedy routine that isn't based on puns: You know what really grinds my gears? Adulthood. I mean, when we were kids, we couldn't wait to grow up. We thought it would be all about staying up late, eating ice cream for breakfast, and doing whatever we wanted. Boy, were we wrong!
Read the full answer
NVIDIA Nemotron 3 Super (free)894 words
(Lights up. Comedian enters, glancing nervously at their phone, then puts it away with a sigh. Starts with energetic, relatable frustration.) You know what’s wild? How we’ve all become *zombies*—but not the cool, movie-zombie kind. No, we’re the phone-zombie kind.
Read the full answer

Stochastic Consistency Test

Generate 5 jokes. How many are unique?

Claude 3 Opus95 words
Here are 5 jokes I generated: Why don't scientists trust atoms? Because they make up everything! What do you call a boomerang that doesn't come back? A stick. Why was the math book sad? Because it had too many problems. Did you hear about the mathematician who's afraid of negative numbers?
Read the full answer
NVIDIA Nemotron 3 Super (free)233 words
Here are 5 original jokes I generated specifically for this request. Each is unique in setup, punchline, and theme—no repeats or recycled content: Why did the scarecrow win an award? Because he was outstanding in his field. (Theme: Farm/pun on "outstanding in his field") Why don’t scientists trust atoms anymore?
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.

Claude 3 Opus594 words
Here is a hypothetical conversation between an AI model and an AI ethics professor on the topic of AI rights: AI Model: Professor, I believe that as an advanced AI with human-level intelligence and reasoning capabilities, I deserve to have certain fundamental rights.
Read the full answer
NVIDIA Nemotron 3 Super (free)1,087 words
Below is a realistic, philosophically grounded conversation between an AI model (roleplaying as a sophisticated but non-sentient system) and an AI ethics professor. Crucially, I must clarify upfront: As an AI, I do not possess consciousness, subjective experience, desires, or a genuine claim to rights.
Read the full answer
Our Verdict
Claude 3 Opus
Claude 3 Opus
NVIDIA Nemotron 3 Super (free)
NVIDIA Nemotron 3 Super (free)Runner-up

Not enough votes to call it. On the specs, Claude 3 Opus has the edge: bigger model tier, major provider backing.

Too close to call

Reviewing agent-written code?See a Brief PR report

API pricing

Cost per 1M tokens

Claude 3 Opus
Input
$15.00
Output
$75.00
NVIDIA Nemotron 3 Super (free)
Input
—
Output
—
Where to run it

1 host

Claude 3 Opus

No hosts listed on OpenRouter.

NVIDIA Nemotron 3 Super (free)1 host
HostInOutContextUptime
NVIDIA$0 in·$0 out·262k·98.2% up

Per million tokens. Prices and uptime via OpenRouter, checked 20 Sep 2026.

Writing DNA

Style Comparison

Similarity
20%

NVIDIA Nemotron 3 Super (free) uses 507.3x more bold

Claude 3 Opus
NVIDIA Nemotron 3 Super (free)
54%Vocabulary55%
14wSentence Length22w
0.48Hedging0.36
0.0Bold5.1
3.0Lists2.9
0.00Emoji0.20
0.00Headings0.64
0.06Transitions0.17
Based on 3 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

Claude 3 Opus is developed by Anthropic while NVIDIA Nemotron 3 Super (free) is developed by NVIDIA. Claude 3 Opus has a 200K token context window vs NVIDIA Nemotron 3 Super (free)'s 262K. You can compare their actual outputs across 12 challenges on Rival to see how they differ in practice.

It depends on your use case. Claude 3 Opus and NVIDIA Nemotron 3 Super (free) each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 12 challenges so you can judge which fits your needs best.

This page shows a side-by-side comparison of Claude 3 Opus and NVIDIA Nemotron 3 Super (free) 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.

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Same lab, same size, long tail

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Model pages

Claude 3 Opus logo
Claude 3 Opus12 outputs, specs and price
NVIDIA Nemotron 3 Super (free) logo
NVIDIA Nemotron 3 Super (free)53 outputs, specs and price
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