DeepSeek V3.1 vs Gemini 2.5 Pro Preview 06-05

Compare DeepSeek V3.1 by DeepSeek against Gemini 2.5 Pro Preview 06-05 by Google AI, context windows of 164K vs 1.0M, tested across 38 shared challenges. Updated April 2026.

Which is better, DeepSeek V3.1 or Gemini 2.5 Pro Preview 06-05?

DeepSeek V3.1 and Gemini 2.5 Pro Preview 06-05 are both competitive models. DeepSeek V3.1 costs $0.2/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05. Context windows: 164K vs 1049K tokens. Compare their real outputs side by side below.

Key Differences Between DeepSeek V3.1 and Gemini 2.5 Pro Preview 06-05

DeepSeek V3.1 is made by deepseek while Gemini 2.5 Pro Preview 06-05 is from google. DeepSeek V3.1 has a 164K token context window compared to Gemini 2.5 Pro Preview 06-05's 1049K. On pricing, DeepSeek V3.1 costs $0.2/M input tokens vs $1.25/M for Gemini 2.5 Pro Preview 06-05.

Our Verdict
DeepSeek V3.1
DeepSeek V3.1
Gemini 2.5 Pro Preview 06-05
Gemini 2.5 Pro Preview 06-05

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

DeepSeek V3.1 is 13x cheaper per token — worth considering if cost matters.

Too close to call
Writing DNA

Style Comparison

Similarity
100%

DeepSeek V3.1 uses 2.4x more emoji

DeepSeek V3.1
Gemini 2.5 Pro Preview 06-05
53%Vocabulary51%
14wSentence Length15w
0.42Hedging0.31
4.0Bold4.8
3.6Lists4.1
0.02Emoji0.00
0.40Headings0.98
0.22Transitions0.05
Based on 23 + 20 text responses
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DeepSeek V3.1Gemini 2.5 Pro Preview 06-05

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