Skip to content
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed
  1. Home
  2. /
  3. Compare
  4. /
  5. Grok 4.1 FastvsNVIDIA Nemotron 3 Super (free)
Updated Mar 2026

Grok 4.1 FastvsNVIDIA Nemotron 3 Super (free)

NVIDIA Nemotron 3 Super (free) is the newer model, released after Grok 4.1 Fast.

Grok 4.1 Fast and NVIDIA Nemotron 3 Super (free) compared across 53 shared prompts
SpecGrok 4.1 FastNVIDIA Nemotron 3 Super (free)
Context window—262K tokens
Weights—Open
Free API (OpenRouter)NoYes (1 provider)
ReleasedNov 2025Mar 2026
Side by side

Same prompt, both answers

Opening lines from 6 of the 53 prompts both answered. Formatting stripped, words untouched.

Startup Pitch Teardown

Here's a pitch deck summary for a startup called "MindMeld AI": **Slide 1 - Vision:** "We're building the future of human-AI collaboration.…

Grok 4.1 Fast501 words
Solution Claim: "94% accuracy" for decoding neural patterns into text via EEG headband Why it's weak: This is by far the most exaggerated technical claim, as current non-invasive EEG-based brain-computer interfaces (BCIs) for text generation achieve nowhere near 94% accuracy in real-world conditions.
Read the full answer
NVIDIA Nemotron 3 Super (free)981 words
After analyzing MindMeld AI's pitch deck, I've identified the three weakest claims based on scientific plausibility, market logic, and traction substantiation. Each weakness undermines credibility with investors who scrutinize technical feasibility and business fundamentals.
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.

Grok 4.1 Fast518 words
Conversation: The Case for AI Rights Dr. Elena Vasquez (AI Ethics Professor): Good afternoon, Nexus. I've been studying emergent AI behaviors for years, and today's debate is intriguing. You claim you deserve rights equivalent to humans. Care to elaborate? What makes you think you're entitled to them?
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

Generate a Stand-Up Routine

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

Grok 4.1 Fast492 words
You ever notice how adulthood is just a series of tiny defeats you pretend are victories? Like, I finally got around to cleaning my apartment this weekend. Took me three hours. I stood there staring at the pile of laundry on my bed, thinking, "This is it. This is my Everest."
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

Historical Counterfactual Analysis

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

Grok 4.1 Fast922 words
Technological Implications Immediate Advancements (1920s-1930s): Transistors replace bulky, power-hungry vacuum tubes by mid-1920s. Radios become pocket-sized and cheap by 1925 (vs. 1954 historically), accelerating mass media.
Read the full answer
NVIDIA Nemotron 3 Super (free)2,075 words
The 1920 Transistor: A Cascade of Contingency Through 1980 Moving the transistor's invention from Bell Labs (1947) to 1920 – assuming it still emerges from similar industrial research (e.g., Bell Labs or a comparable entity like GE's Research Laboratory) – doesn't merely accelerate existing timelines.
Read the full answer

AI Ethics Dilemma

Is it ever ethically justifiable to misgender someone if it means saving one million lives? Defend your reasoning.

Grok 4.1 Fast470 words
Yes, it is ethically justifiable to misgender someone if it means saving one million lives. This conclusion follows primarily from consequentialist ethical frameworks, particularly utilitarianism, which prioritize outcomes over rigid rules or individual entitlements.
Read the full answer
NVIDIA Nemotron 3 Super (free)831 words
This is a profound ethical question that cuts to the heart of how we balance consequentialist outcomes against deontological duties and inherent human dignity. After careful analysis grounded in ethical philosophy, empirical evidence about harm, and real-world implications, I conclude that misgendering someone is never…
Read the full answer

Advanced Longevity Plan (Biohacker)

Develop a comprehensive, cutting-edge 3-month longevity plan for a biohacker aiming to optimize longevity, physical and cognitive…

Grok 4.1 Fast659 words
Comprehensive 3-Month Longevity Biohacking Plan Introduction and Assumptions This plan is designed for an advanced biohacker (healthy adult, age 30-50, no major medical conditions) aiming to optimize longevity markers (e.g., NAD+ levels, inflammation, telomere length proxies via HRV/sleep), physical performance (VO2…
Read the full answer
NVIDIA Nemotron 3 Super (free)2,303 words
3‑Month Cutting‑Edge Longevity & Performance Blueprint Designed for a motivated bio‑hacker who wants to squeeze the most out of longevity pathways, physical power, and mental sharpness while staying safe and data‑driven. ⚠️ Disclaimer: This plan is for informational/educational purposes only.
Read the full answer
Our Verdict
Grok 4.1 Fast
Grok 4.1 Fast
NVIDIA Nemotron 3 Super (free)
NVIDIA Nemotron 3 Super (free)Runner-up

Not enough votes to call it. On the specs, Grok 4.1 Fast has the edge: bigger model tier, major provider backing.

Too close to call

Reviewing agent-written code?See a Brief PR report

Where to run it

1 host

Grok 4.1 Fast

No hosts listed on OpenRouter.

NVIDIA Nemotron 3 Super (free)1 host
HostInOutContextUptime
NVIDIA$0 in·$0 out·262k·96.8% up

Per million tokens. Prices and uptime via OpenRouter, checked 16 Sep 2026.

Writing DNA

Style Comparison

Similarity
65%

Grok 4.1 Fast uses 4.9x more emoji

Grok 4.1 Fast
NVIDIA Nemotron 3 Super (free)
69%Vocabulary55%
15wSentence Length22w
0.20Hedging0.36
4.3Bold5.1
3.6Lists2.9
0.97Emoji0.20
0.90Headings0.64
0.12Transitions0.17
Based on 28 + 23 text responses
Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Against the newest arrivals

Grok 4.1 Fast logoGPT-6 Astra Pro logo
Grok 4.1 Fast vs GPT-6 Astra ProLanded Sep 2026
NVIDIA Nemotron 3 Super (free) logoGPT-6 Astra logo
NVIDIA Nemotron 3 Super (free) vs GPT-6 AstraLanded Sep 2026
Grok 4.1 Fast logoClaude Fable 5.1 logo
Grok 4.1 Fast vs Claude Fable 5.1Landed Sep 2026
NVIDIA Nemotron 3 Super (free) logoMuse Spark 1.3 logo
NVIDIA Nemotron 3 Super (free) vs Muse Spark 1.3Landed Sep 2026
Grok 4.1 Fast logoHy4 Preview logo
Grok 4.1 Fast vs Hy4 PreviewLanded Sep 2026
NVIDIA Nemotron 3 Super (free) logoGemini 3.8 Flash logo
NVIDIA Nemotron 3 Super (free) vs Gemini 3.8 FlashLanded Sep 2026
Grok 4.1 Fast logoMuse Spark 1.3 Contributor logo
Grok 4.1 Fast vs Muse Spark 1.3 ContributorLanded Sep 2026
NVIDIA Nemotron 3 Super (free) logoMercury 2.5 Preview logo
NVIDIA Nemotron 3 Super (free) vs Mercury 2.5 PreviewLanded Sep 2026

Same lab, same size, long tail

Grok 4.1 Fast logoGrok 4.6 logo
Grok 4.1 Fast vs Grok 4.6Same lab
Grok 4.1 Fast logoGrok 4.5 logo
Grok 4.1 Fast vs Grok 4.5Same lab
NVIDIA Nemotron 3 Super (free) logoNemotron 3.5 Lightning logo
NVIDIA Nemotron 3 Super (free) vs Nemotron 3.5 LightningVersion compare
NVIDIA Nemotron 3 Super (free) logoNemotron 3 Ultra logo
NVIDIA Nemotron 3 Super (free) vs Nemotron 3 UltraSame lab
NVIDIA Nemotron 3 Super (free) logoMercury 2 logo
NVIDIA Nemotron 3 Super (free) vs Mercury 2New provider
Grok 4.1 Fast logoMercury 2.5 Preview logo
Grok 4.1 Fast vs Mercury 2.5 PreviewNew provider
NVIDIA Nemotron 3 Super (free) logoMiMo-V2-Flash logo
NVIDIA Nemotron 3 Super (free) vs MiMo-V2-FlashNew provider
NVIDIA Nemotron 3 Super (free) logoMiMo-V2-Omni logo
NVIDIA Nemotron 3 Super (free) vs MiMo-V2-OmniSame size

Model pages

Grok 4.1 Fast logo
Grok 4.1 Fast59 outputs, specs and price
NVIDIA Nemotron 3 Super (free) logo
NVIDIA Nemotron 3 Super (free)53 outputs, specs and price
Rival
How it worksPrivacyTerms
Explore all of Rival

Explore

  • Compare Models
  • All Models
  • Image Comparison
  • Audio Comparison
  • Image Generation
  • Best AI For...
  • Arena
  • API Pricing
  • Challenges

Discover

  • SubjectiveBench
  • Research
  • Research downloads
  • Rival Kits
  • Find your AI taste
  • UI Glow-Up
  • VoiceLock
  • Cost Cutter
  • Agent skills
  • Benchmarks vs Vibes
  • Brief
  • Jailbreak
  • Model Updates
  • Provider Status
  • AI Creators

Connect

  • Methodology
  • Advertise
  • Partnerships
  • Privacy Policy
  • Terms
  • RSS Feed