Gemini 3 Flash Preview vs Grok 3

Compare Gemini 3 Flash Preview by Google AI against Grok 3 by xAI, context windows of 1.0M vs 128K, tested across 53 shared challenges. Updated April 2026.

Which is better, Gemini 3 Flash Preview or Grok 3?

Gemini 3 Flash Preview and Grok 3 are both competitive models. Context windows: 1049K vs 128K tokens. Compare their real outputs side by side below.

Key Differences Between Gemini 3 Flash Preview and Grok 3

Gemini 3 Flash Preview is made by google while Grok 3 is from xai. Gemini 3 Flash Preview has a 1049K token context window compared to Grok 3's 128K.

Our Verdict
Gemini 3 Flash Preview
Gemini 3 Flash Preview
Grok 3
Grok 3

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
86%

Grok 3 uses 3.9x more emoji

Gemini 3 Flash Preview
Grok 3
55%Vocabulary49%
18wSentence Length18w
0.42Hedging0.94
7.1Bold2.5
4.5Lists3.0
0.00Emoji0.04
0.84Headings0.65
0.07Transitions0.08
Based on 24 + 17 text responses
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Gemini 3 Flash PreviewGrok 3

279 AI models invented the same fake scientist.

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

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