Grok 4.3vsNemotron 3 Ultra
Nemotron 3 Ultra is cheaper than Grok 4.3 at $0/M vs $1.25/M input tokens.
| Spec | Grok 4.3 | Nemotron 3 Ultra |
|---|---|---|
| Input price | $1.25/M tokens | Free |
| Output price | $2.5/M tokens | Free |
| Context window | 1.0M tokens | 1.0M tokens |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | Yes (1 provider) |
| Released | May 2026 | Jun 2026 |
Our Verdict
Nemotron 3 Ultra
Grok 4.3Runner-up
Not enough votes to call it. On the specs, Nemotron 3 Ultra has the edge: bigger model tier, newer.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Grok 4.3
Input
$1.25
Output
$2.50
Nemotron 3 Ultra
Input
$0.000
Output
$0.000
Where to run it
2 hosts
Grok 4.31 host
Nemotron 3 Ultra1 host
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
44%
Nemotron 3 Ultra uses 13.4x more emoji
Grok 4.3
Nemotron 3 Ultra
62%Vocabulary59%
16wSentence Length16w
0.46Hedging0.26
2.3Bold7.7
2.5Lists2.7
0.00Emoji0.13
0.34Headings0.75
0.14Transitions0.04
Based on 27 + 26 text responses
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