DeepSeek V3.1 vs DeepSeek Prover V2

Compare DeepSeek V3.1 and DeepSeek Prover V2, both from DeepSeek, context windows of 164K vs 164K, tested across 6 shared challenges. Updated April 2026.

Which is better, DeepSeek V3.1 or DeepSeek Prover V2?

DeepSeek V3.1 and DeepSeek Prover V2 are both competitive models. DeepSeek V3.1 costs $0.2/M input tokens vs $0/M for DeepSeek Prover V2. Context windows: 164K vs 164K tokens. Compare their real outputs side by side below.

Key Differences Between DeepSeek V3.1 and DeepSeek Prover V2

DeepSeek V3.1 is made by deepseek while DeepSeek Prover V2 is from deepseek. DeepSeek V3.1 has a 164K token context window compared to DeepSeek Prover V2's 164K. On pricing, DeepSeek V3.1 costs $0.2/M input tokens vs $0/M for DeepSeek Prover V2.

Our Verdict
DeepSeek V3.1
DeepSeek V3.1
DeepSeek Prover V2
DeepSeek Prover V2

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
79%

DeepSeek V3.1 uses 42.3x more hedging

DeepSeek V3.1
DeepSeek Prover V2
53%Vocabulary47%
14wSentence Length8w
0.42Hedging0.00
4.0Bold3.1
3.6Lists0.0
0.02Emoji0.00
0.40Headings0.35
0.22Transitions0.19
Based on 23 + 1 text responses
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DeepSeek V3.1DeepSeek Prover V2

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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