Grok 3 vs NVIDIA: Nemotron 3 Ultra
Compare Grok 3 by xAI against NVIDIA: Nemotron 3 Ultra by NVIDIA, context windows of 128K vs 1.0M, tested across 52 shared challenges. Updated June 2026.
Which is better, Grok 3 or NVIDIA: Nemotron 3 Ultra?
Grok 3 and NVIDIA: Nemotron 3 Ultra are both competitive models. Context windows: 128K vs 1000K tokens. Compare their real outputs side by side below.
Key Differences Between Grok 3 and NVIDIA: Nemotron 3 Ultra
Grok 3 is made by xai while NVIDIA: Nemotron 3 Ultra is from nvidia. Grok 3 has a 128K token context window compared to NVIDIA: Nemotron 3 Ultra's 1000K.
API pricing
Per 1M tokens
Grok 3
Input
—
Output
—
NVIDIA: Nemotron 3 Ultra
Input
$0.000
Output
$0.000
Our Verdict
Grok 3
NVIDIA: Nemotron 3 Ultra
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
Writing DNA
Style Comparison
Similarity
37%
Grok 3 uses 3.6x more hedging
Grok 3
NVIDIA: Nemotron 3 Ultra
49%Vocabulary59%
18wSentence Length16w
0.94Hedging0.26
2.5Bold7.7
3.0Lists2.7
0.04Emoji0.13
0.65Headings0.75
0.08Transitions0.04
Based on 17 + 26 text responses
FAQ
