GPT-5.2vsKimi K2 0905
Kimi K2 0905 is cheaper than GPT-5.2 at $0.6/M vs $1.75/M input tokens.
| Spec | GPT-5.2 | Kimi K2 0905 |
|---|---|---|
| Input price | $1.75/M tokens | $0.6/M tokens |
| Output price | $14/M tokens | $2.5/M tokens |
| Context window | 400K tokens | 262K tokens |
| Weights | Closed | Open |
| Free API (OpenRouter) | No | No |
| Released | Dec 2025 | Sep 2025 |
Our Verdict
GPT-5.2
Kimi K2 0905Runner-up
Not enough votes to call it. On the specs, GPT-5.2 has the edge: newer, bigger context window, major provider backing.
Kimi K2 0905 costs 5.6x less per token.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.2
Input
$1.75
Output
$14.00
Kimi K2 0905
Input
$0.60
2.9× cheaper
Output
$2.50
5.6× cheaper
Kimi K2 0905 is cheaper on both: 2.9× input, 5.6× output.
Where to run it
3 hosts
Kimi K2 09051 host
Per million tokens. Prices and uptime via OpenRouter, checked 9 Sep 2026.
Writing DNA
Style Comparison
Similarity
62%
GPT-5.2 uses 5.3x more transitions
GPT-5.2
Kimi K2 0905
64%Vocabulary65%
16wSentence Length21w
0.34Hedging0.16
9.4Bold2.8
3.9Lists3.0
0.06Emoji0.11
0.89Headings0.69
0.31Transitions0.06
Based on 15 + 28 text responses
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