Kimi K2vso1
Kimi K2 is cheaper than o1 at $0.57/M vs $15/M input tokens.
| Spec | Kimi K2 | o1 |
|---|---|---|
| Input price | $0.57/M tokens | $15/M tokens |
| Output price | $2.3/M tokens | $60/M tokens |
| Context window | — | 128K tokens |
| Released | Jul 2025 | Dec 2024 |
| SWE-bench Verified | 65.8% | 48.9% |
Our Verdict
Kimi K2
o1Runner-up
Not enough votes to call it. On the specs, Kimi K2 has the edge: bigger model tier, newer.
Kimi K2 costs 26x less per token.
Too close to call
API pricing
Cost per 1M tokens
Kimi K2
Input
$0.57
26× cheaper
Output
$2.30
26× cheaper
o1
Input
$15.00
Output
$60.00
Kimi K2 is cheaper on both — 26× input, 26× output
Writing DNA
Style Comparison
Similarity
41%
Kimi K2 uses 68.5x more emoji
Kimi K2
o1
63%Vocabulary64%
19wSentence Length16w
0.35Hedging0.76
4.2Bold5.0
3.6Lists2.6
0.68Emoji0.00
0.61Headings0.44
0.06Transitions0.40
Based on 22 + 13 text responses
Research
What we learned reading every model
FAQ
