xAI: Grok 4
Nothing here. The model returned empty. We stared at it for a while.
xAI: Grok 4 vs Kimi K2
Compare xAI: Grok 4 by xAI against Kimi K2 by Moonshot AI, in 3 community votes, kimi k2 wins 67% of head-to-head duels, tested across 30 shared challenges. Updated April 2026.
Which is better, xAI: Grok 4 or Kimi K2?
Kimi K2 is the better choice overall, winning 67% of 3 blind community votes on Rival. xAI: Grok 4 costs $3/M input tokens vs $0.57/M for Kimi K2. Compare their real outputs side by side below.
Key Differences Between xAI: Grok 4 and Kimi K2
xAI: Grok 4 is made by xai while Kimi K2 is from moonshotai. On pricing, xAI: Grok 4 costs $3/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 has the edge overall, but performance varies by task type. Based on blind community voting from the Rival open dataset of 3+ human preference judgments for this pair.
Image Generation: xAI: Grok 4 and Kimi K2 are tied
Our Verdict
Kimi K2Winner
xAI: Grok 4Runner-up
Pick Kimi K2. In 3 blind votes, Kimi K2 wins 67% of the time. That's not luck.
Kimi K2 is 6.5x cheaper per token — worth considering if cost matters.
Clear winner
Writing DNA
Style Comparison
Similarity
92%
Kimi K2 uses 9.8x more emoji
xAI: Grok 4
Kimi K2
53%Vocabulary63%
18wSentence Length19w
0.67Hedging0.35
2.7Bold4.2
2.7Lists3.6
0.07Emoji0.68
0.86Headings0.61
0.04Transitions0.06
Based on 21 + 22 text responses
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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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