xAI: Grok 4.3 vs Kimi K2.5
Compare xAI: Grok 4.3 by xAI against Kimi K2.5 by Moonshot AI, context windows of 1.0M vs 262K, tested across 54 shared challenges.
Our Verdict
xAI: Grok 4.3
Kimi K2.5Runner-up
No community votes yet. On paper, xAI: Grok 4.3 has the edge — newer, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
xAI: Grok 4.3
Input
$1.25
Output
$2.50
1.2× cheaper
Kimi K2.5
Input
$0.60
2.1× cheaper
Output
$3.00
Kimi K2.5 wins input (2.1× cheaper)·xAI: Grok 4.3 wins output (1.2× cheaper)
Writing DNA
Style Comparison
Similarity
67%
xAI: Grok 4.3
Kimi K2.5
62%Vocabulary61%
16wSentence Length21w
0.46Hedging0.55
2.3Bold4.9
2.5Lists2.8
0.00Emoji0.01
0.34Headings0.56
0.14Transitions0.17
Based on 27 + 20 text responses
Research
What we learned reading every model
FAQ
