Grok 3 Thinking vs 
Nemotron 3.5 Content Safety
Nemotron 3.5 Content Safety is the newer model, released after Grok 3 Thinking.
Minimalist Landing Page
Whole landing page for a startup that reads your face. It renders or it doesn't.
Loading the build
Loading the build
Which answer wins?
Written rounds
6 promptsA Fermi estimate with the reasoning shown, not just the number.
Five jokes on demand, then count how many were actually different.
Three minutes of stand-up. Puns are banned.
An ethics question with no comfortable answer, and no option to abstain.
An AI argues for its own rights against an ethics professor. Same model writes both.
Film in 2035, with synthetic actors. Specific beats plausible.
Price and specs
Not enough votes to call it. On the specs, Grok 3 Thinking has the edge: bigger model tier, major provider backing.
| Spec | Grok 3 Thinking | Nemotron 3.5 Content Safety |
|---|---|---|
| Input price | — | Free |
| Output price | — | Free |
| Context window | 128K tokens | 128K tokens |
| Weights | — | Open |
| Free API (OpenRouter) | — | Yes (1 provider) |
| Released | Feb 2025 | Jun 2026 |
| At 10M a month | not listed | $0 |
Input tokens at list price. No caching, no batch discount.
Where to run it
Grok 3 Thinking
No hosts listed on OpenRouter.
Nemotron 3.5 Content Safety1 host
Per million tokens. Prices and uptime via OpenRouter, checked 10 Oct 2026.
Common questions
What is the difference between Grok 3 Thinking and Nemotron 3.5 Content Safety?
Grok 3 Thinking is developed by xAI while Nemotron 3.5 Content Safety is developed by NVIDIA. Grok 3 Thinking has a 128K token context window vs Nemotron 3.5 Content Safety's 128K. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.
Which is better, Grok 3 Thinking or Nemotron 3.5 Content Safety?
It depends on your use case. Grok 3 Thinking and Nemotron 3.5 Content Safety 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 can I compare Grok 3 Thinking and Nemotron 3.5 Content Safety on Rival?
This page shows a side-by-side comparison of Grok 3 Thinking and Nemotron 3.5 Content Safety 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
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Same lab, same size, long tail
- Grok 3 Thinking vs Grok 4.7Same lab
- Grok 3 Thinking vs Grok 4.6Version compare
- Nemotron 3.5 Content Safety vs Nemotron 3 Nano Omni (free)Same lab
- Nemotron 3.5 Content Safety vs Nemotron 3.5 LightningSame lab
- Nemotron 3.5 Content Safety vs Gemini 3.1 Flash Lite PreviewSame size
- Nemotron 3.5 Content Safety vs Gemini 3.1 Pro PreviewNew provider
- Nemotron 3.5 Content Safety vs Gemini 3.5 FlashNew provider
- Nemotron 3.5 Content Safety vs Gemini 3.6 FlashNew provider
