Gemini 3 Pro Preview vs Gemini 3.1 Pro Preview

Compare Gemini 3 Pro Preview and Gemini 3.1 Pro Preview, both from Google AI, tested across 50 shared challenges. Updated April 2026.

Which is better, Gemini 3 Pro Preview or Gemini 3.1 Pro Preview?

Gemini 3 Pro Preview and Gemini 3.1 Pro Preview are both competitive models. Compare their real outputs side by side below.

Key Differences Between Gemini 3 Pro Preview and Gemini 3.1 Pro Preview

Gemini 3 Pro Preview is made by google while Gemini 3.1 Pro Preview is from google.

Our Verdict
Gemini 3 Pro Preview
Gemini 3 Pro Preview
Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview

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
100%

Gemini 3 Pro Preview uses 1.8x more transitions

Gemini 3 Pro Preview
Gemini 3.1 Pro Preview
58%Vocabulary54%
17wSentence Length18w
0.37Hedging0.29
7.7Bold4.9
4.8Lists3.3
0.00Emoji0.00
0.90Headings0.72
0.25Transitions0.14
Based on 23 + 23 text responses
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Ask them anything yourself

Gemini 3 Pro PreviewGemini 3.1 Pro Preview

279 AI models invented the same fake scientist.

We read every word. 250 models. 2.14 million words. This is what we found.

AI Hallucination Index 2026
Free preview13 of 58 slides
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