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Claude Opus 4.6 vs Gemini 3.1 Pro Preview

Compare Claude Opus 4.6 by Anthropic against Gemini 3.1 Pro Preview by Google AI, in 234 community votes, gemini 3.1 pro preview wins 70% of head-to-head duels, context windows of 1.0M vs 1.0M, tested across 53 shared challenges. Updated April 2026.

Which is better, Claude Opus 4.6 or Gemini 3.1 Pro Preview?

Gemini 3.1 Pro Preview is the better choice overall, winning 70% of 234 blind community votes on Rival. Claude Opus 4.6 costs $5/M input tokens vs $2/M for Gemini 3.1 Pro Preview. Context windows: 1000K vs 1049K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Opus 4.6 and Gemini 3.1 Pro Preview

Claude Opus 4.6 is made by anthropic while Gemini 3.1 Pro Preview is from google. Claude Opus 4.6 has a 1000K token context window compared to Gemini 3.1 Pro Preview's 1049K. On pricing, Claude Opus 4.6 costs $5/M input tokens vs $2/M for Gemini 3.1 Pro Preview. In community voting, In 234 community votes, Gemini 3.1 Pro Preview wins 70% of head-to-head duels.

In 234 community votes, Gemini 3.1 Pro Preview wins 70% of head-to-head duels. Gemini 3.1 Pro Preview leads in Web Design, Image Generation, Reasoning. Based on blind community voting from the Rival open dataset of 234+ human preference judgments for this pair.

Web Design: Gemini 3.1 Pro Preview wins 59% of votes
Image Generation: Gemini 3.1 Pro Preview wins 95% of votes
Reasoning: Gemini 3.1 Pro Preview wins 68% of votes
Conversation: Gemini 3.1 Pro Preview wins 63% of votes
Analysis: Gemini 3.1 Pro Preview wins 67% of votes
Our Verdict
Gemini 3.1 Pro Preview
Gemini 3.1 Pro PreviewWinner
Claude Opus 4.6
Claude Opus 4.6Runner-up

Pick Gemini 3.1 Pro Preview. In 234 blind votes, Gemini 3.1 Pro Preview wins 70% of the time. That's not luck.

Gemini 3.1 Pro Preview particularly excels in Image Generation, Reasoning, Analysis.

Clear winner
Writing DNA

Style Comparison

Similarity
96%

Claude Opus 4.6 uses 20.7x more emoji

Claude Opus 4.6
Gemini 3.1 Pro Preview
53%Vocabulary54%
35wSentence Length18w
0.68Hedging0.29
5.2Bold4.9
2.9Lists3.3
0.21Emoji0.00
1.34Headings0.72
0.03Transitions0.14
Based on 23 + 23 text responses
vs

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Claude Opus 4.6Gemini 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
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