DeepSeek R1 vs Gemini 3.1 Pro Preview

Compare DeepSeek R1 by DeepSeek against Gemini 3.1 Pro Preview by Google AI, context windows of 128K vs 1.0M, tested across 52 shared challenges. Updated April 2026.

Which is better, DeepSeek R1 or Gemini 3.1 Pro Preview?

DeepSeek R1 and Gemini 3.1 Pro Preview are both competitive models. DeepSeek R1 costs $0.55/M input tokens vs $2/M for Gemini 3.1 Pro Preview. Context windows: 128K vs 1049K tokens. Compare their real outputs side by side below.

Key Differences Between DeepSeek R1 and Gemini 3.1 Pro Preview

DeepSeek R1 is made by deepseek while Gemini 3.1 Pro Preview is from google. DeepSeek R1 has a 128K token context window compared to Gemini 3.1 Pro Preview's 1049K. On pricing, DeepSeek R1 costs $0.55/M input tokens vs $2/M for Gemini 3.1 Pro Preview.

Our Verdict
Gemini 3.1 Pro Preview
Gemini 3.1 Pro Preview
DeepSeek R1
DeepSeek R1Runner-up

No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — bigger model tier, newer, bigger context window.

DeepSeek R1 is 5.5x cheaper per token — worth considering if cost matters.

Slight edge
Writing DNA

Style Comparison

Similarity
95%

DeepSeek R1 uses 4.3x more emoji

DeepSeek R1
Gemini 3.1 Pro Preview
62%Vocabulary54%
15wSentence Length18w
0.52Hedging0.29
8.0Bold4.9
5.7Lists3.3
0.04Emoji0.00
0.62Headings0.72
0.28Transitions0.14
Based on 22 + 23 text responses
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DeepSeek R1Gemini 3.1 Pro Preview

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