Claude Opus 4 vs MoonshotAI: Kimi K2 0905
Compare Claude Opus 4 by Anthropic against MoonshotAI: Kimi K2 0905 by Moonshot AI, context windows of 200K vs 262K, tested across 53 shared challenges.
Our Verdict
Claude Opus 4
MoonshotAI: Kimi K2 0905
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
MoonshotAI: Kimi K2 0905 is 30x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 4
Input
$15.00
Output
$75.00
MoonshotAI: Kimi K2 0905
Input
$0.60
25× cheaper
Output
$2.50
30× cheaper
MoonshotAI: Kimi K2 0905 is cheaper on both — 25× input, 30× output
Writing DNA
Style Comparison
Similarity
47%
Claude Opus 4 uses 4.8x more transitions
Claude Opus 4
MoonshotAI: Kimi K2 0905
64%Vocabulary62%
62wSentence Length19w
0.52Hedging0.17
4.4Bold3.3
9.1Lists3.4
0.11Emoji0.15
1.87Headings0.83
0.27Transitions0.06
Based on 16 + 22 text responses
Research
What we learned reading every model
FAQ
