Nemotron 3 UltravsSonoma Sky Alpha
Sonoma Sky Alpha has a larger context window than Nemotron 3 Ultra (2.0M tokens vs 1.0M tokens).
| Spec | Nemotron 3 Ultra | Sonoma Sky Alpha |
|---|---|---|
| Input price | Free | Free |
| Output price | Free | Free |
| Context window | 1.0M tokens | 2.0M tokens |
| Weights | Open | — |
| Free API (OpenRouter) | Yes (1 provider) | No |
| Released | Jun 2026 | Sep 2025 |
Our Verdict
Nemotron 3 Ultra
Sonoma Sky Alpha
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
API pricing
Cost per 1M tokens
Nemotron 3 Ultra
Input
$0.000
Output
$0.000
Sonoma Sky Alpha
Input
$0.000
Output
$0.000
Where to run it
1 host
Nemotron 3 Ultra1 host
Sonoma Sky Alpha
No hosts listed on OpenRouter.
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
49%
Nemotron 3 Ultra uses 4.8x more bold
Nemotron 3 Ultra
Sonoma Sky Alpha
59%Vocabulary62%
16wSentence Length16w
0.26Hedging0.41
7.7Bold1.6
2.7Lists2.8
0.13Emoji0.13
0.75Headings1.42
0.04Transitions0.06
Based on 26 + 14 text responses
Research
What we learned reading every model
FAQ
Common questions
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