Claude Haiku 4.5vsKimi K2
Kimi K2 is cheaper than Claude Haiku 4.5 at $0.57/M vs $1/M input tokens.
| Spec | Claude Haiku 4.5 | Kimi K2 |
|---|---|---|
| Input price | $1/M tokens | $0.57/M tokens |
| Output price | $5/M tokens | $2.3/M tokens |
| Context window | 200K tokens | — |
| Released | Oct 2025 | Jul 2025 |
| SWE-bench Verified | 73.3% | 65.8% |
Our Verdict
Claude Haiku 4.5
Kimi K2
Not enough votes to call it. On the specs, nothing separates them.
Claude Haiku 4.5 takes Web Design.
Too close to call
API pricing
Cost per 1M tokens
Claude Haiku 4.5
Input
$1.00
Output
$5.00
Kimi K2
Input
$0.57
1.8× cheaper
Output
$2.30
2.2× cheaper
Kimi K2 is cheaper on both — 1.8× input, 2.2× output
Writing DNA
Style Comparison
Similarity
53%
Claude Haiku 4.5 uses 4.0x more headings
Claude Haiku 4.5
Kimi K2
61%Vocabulary63%
47wSentence Length19w
0.64Hedging0.35
5.1Bold4.2
6.3Lists3.6
0.20Emoji0.68
2.46Headings0.61
0.17Transitions0.06
Based on 24 + 22 text responses
Research
What we learned reading every model
FAQ
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