Grok 3 Beta vs MoonshotAI: Kimi K3
Compare Grok 3 Beta by xAI against MoonshotAI: Kimi K3 by Moonshot AI, context windows of 131K vs 1.0M, tested across 53 shared challenges.
Our Verdict
Grok 3 Beta
MoonshotAI: Kimi K3
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Grok 3 Beta is 3.8x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Grok 3 Beta
Input
$2.00
1.5× cheaper
Output
$4.00
3.8× cheaper
MoonshotAI: Kimi K3
Input
$3.00
Output
$15.00
Grok 3 Beta is cheaper on both — 1.5× input, 3.8× output
Writing DNA
Style Comparison
Similarity
39%
MoonshotAI: Kimi K3 uses 77.9x more emoji
Grok 3 Beta
MoonshotAI: Kimi K3
48%Vocabulary58%
19wSentence Length21w
0.67Hedging0.46
3.1Bold3.6
5.5Lists3.4
0.00Emoji0.78
0.52Headings0.89
0.28Transitions0.17
Based on 23 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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