xAI: Grok 4.5 vs Kimi K2.6
Compare xAI: Grok 4.5 by xAI against Kimi K2.6 by Moonshot AI, context windows of 500K vs 262K, tested across 54 shared challenges.
Our Verdict
xAI: Grok 4.5
Kimi K2.6Runner-up
No community votes yet. On paper, xAI: Grok 4.5 has the edge — newer, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
xAI: Grok 4.5
Input
$2.00
Output
$6.00
Kimi K2.6
Input
$0.95
2.1× cheaper
Output
$4.00
1.5× cheaper
Kimi K2.6 is cheaper on both — 2.1× input, 1.5× output
Writing DNA
Style Comparison
Similarity
63%
Kimi K2.6 uses 2.8x more transitions
xAI: Grok 4.5
Kimi K2.6
61%Vocabulary57%
16wSentence Length16w
0.23Hedging0.37
2.5Bold4.3
2.4Lists2.0
0.09Emoji0.03
0.48Headings0.53
0.06Transitions0.16
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
