Gemini 3 Pro PreviewvsGrok 4.3
Grok 4.3 is the newer model, released after Gemini 3 Pro Preview.
| Spec | Gemini 3 Pro Preview | Grok 4.3 |
|---|---|---|
| Input price | — | $1.25/M tokens |
| Output price | — | $2.5/M tokens |
| Context window | — | 1.0M tokens |
| Weights | — | Closed |
| Free API (OpenRouter) | No | No |
| Released | Nov 2025 | May 2026 |
Our Verdict
Gemini 3 Pro Preview
Grok 4.3
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
API pricing
Cost per 1M tokens
Gemini 3 Pro Preview
Input
—
Output
—
Grok 4.3
Input
$1.25
Output
$2.50
Where to run it
1 host
Gemini 3 Pro Preview
No hosts listed on OpenRouter.
Grok 4.31 host
Per million tokens. Prices and uptime via OpenRouter, checked 8 Sep 2026.
Writing DNA
Style Comparison
Similarity
49%
Gemini 3 Pro Preview uses 3.4x more bold
Gemini 3 Pro Preview
Grok 4.3
58%Vocabulary62%
17wSentence Length16w
0.37Hedging0.46
7.7Bold2.3
4.8Lists2.5
0.00Emoji0.00
0.90Headings0.34
0.25Transitions0.14
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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