DeepSeek V3.1 vs Kimi K2

Compare DeepSeek V3.1 by DeepSeek against Kimi K2 by Moonshot AI, in 3 community votes, kimi k2 wins 67% of head-to-head duels, tested across 35 shared challenges. Updated April 2026.

Which is better, DeepSeek V3.1 or Kimi K2?

Kimi K2 is the better choice overall, winning 67% of 3 blind community votes on Rival. DeepSeek V3.1 costs $0.2/M input tokens vs $0.57/M for Kimi K2. Compare their real outputs side by side below.

Key Differences Between DeepSeek V3.1 and Kimi K2

DeepSeek V3.1 is made by deepseek while Kimi K2 is from moonshotai. On pricing, DeepSeek V3.1 costs $0.2/M input tokens vs $0.57/M for Kimi K2. In community voting, In 3 community votes, Kimi K2 wins 67% of head-to-head duels.

In 3 community votes, Kimi K2 wins 67% of head-to-head duels. Kimi K2 leads in Reasoning. Based on blind community voting from the Rival open dataset of 3+ human preference judgments for this pair.

Reasoning: Kimi K2 wins 67% of votes
Our Verdict
Kimi K2
Kimi K2Winner
DeepSeek V3.1
DeepSeek V3.1Runner-up

Pick Kimi K2. In 3 blind votes, Kimi K2 wins 67% of the time. That's not luck.

Kimi K2 particularly excels in Reasoning.

Clear winner
Writing DNA

Style Comparison

Similarity
97%

Kimi K2 uses 29.1x more emoji

DeepSeek V3.1
Kimi K2
53%Vocabulary63%
14wSentence Length19w
0.42Hedging0.35
4.0Bold4.2
3.6Lists3.6
0.02Emoji0.68
0.40Headings0.61
0.22Transitions0.06
Based on 23 + 22 text responses
vs

Ask them anything yourself

DeepSeek V3.1Kimi K2

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
Free preview13 of 58 slides
FAQ

Common questions