Claude Haiku 4.5 vs MoonshotAI: Kimi K3
Compare Claude Haiku 4.5 by Anthropic against MoonshotAI: Kimi K3 by Moonshot AI, context windows of 200K vs 1.0M, tested across 53 shared challenges.
Our Verdict
MoonshotAI: Kimi K3
Claude Haiku 4.5Runner-up
No community votes yet. On paper, MoonshotAI: Kimi K3 has the edge — bigger model tier, newer, bigger context window.
Claude Haiku 4.5 is 3.0x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Haiku 4.5
Input
$1.00
3.0× cheaper
Output
$5.00
3.0× cheaper
MoonshotAI: Kimi K3
Input
$3.00
Output
$15.00
Claude Haiku 4.5 is cheaper on both — 3.0× input, 3.0× output
Writing DNA
Style Comparison
Similarity
59%
MoonshotAI: Kimi K3 uses 3.8x more emoji
Claude Haiku 4.5
MoonshotAI: Kimi K3
61%Vocabulary58%
47wSentence Length21w
0.64Hedging0.46
5.1Bold3.6
6.3Lists3.4
0.20Emoji0.78
2.46Headings0.89
0.17Transitions0.17
Based on 24 + 27 text responses
Research
What we learned reading every model
FAQ
