xAI: Grok 4.5 vs Kimi K2
Compare xAI: Grok 4.5 by xAI against Kimi K2 by Moonshot AI, tested across 54 shared challenges.
Our Verdict
xAI: Grok 4.5
Kimi K2
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
API pricing
Cost per 1M tokens
xAI: Grok 4.5
Input
$2.00
Output
$6.00
Kimi K2
Input
$0.57
3.5× cheaper
Output
$2.30
2.6× cheaper
Kimi K2 is cheaper on both — 3.5× input, 2.6× output
Writing DNA
Style Comparison
Similarity
71%
Kimi K2 uses 7.6x more emoji
xAI: Grok 4.5
Kimi K2
61%Vocabulary63%
16wSentence Length19w
0.23Hedging0.35
2.5Bold4.2
2.4Lists3.6
0.09Emoji0.68
0.48Headings0.61
0.06Transitions0.06
Based on 27 + 22 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
