GPT-5.1 ChatvsKimi Linear 48B A3B Instruct
Kimi Linear 48B A3B Instruct is cheaper than GPT-5.1 Chat at $0.3/M vs $1.25/M input tokens.
| Spec | GPT-5.1 Chat | Kimi Linear 48B A3B Instruct |
|---|---|---|
| Input price | $1.25/M tokens | $0.3/M tokens |
| Output price | $10/M tokens | $0.6/M tokens |
| Context window | 128K tokens | 1.0M tokens |
| Released | Nov 2025 | Nov 2025 |
Our Verdict
Kimi Linear 48B A3B Instruct
GPT-5.1 ChatRunner-up
Not enough votes to call it. On the specs, Kimi Linear 48B A3B Instruct has the edge: bigger model tier, bigger context window.
Kimi Linear 48B A3B Instruct costs 17x less per token.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.1 Chat
Input
$1.25
Output
$10.00
Kimi Linear 48B A3B Instruct
Input
$0.30
4.2× cheaper
Output
$0.60
17× cheaper
Kimi Linear 48B A3B Instruct is cheaper on both — 4.2× input, 17× output
Writing DNA
Style Comparison
Similarity
83%
Kimi Linear 48B A3B Instruct uses 37.7x more headings
GPT-5.1 Chat
Kimi Linear 48B A3B Instruct
73%Vocabulary63%
18wSentence Length15w
0.45Hedging0.19
1.1Bold5.2
2.4Lists3.2
0.00Emoji0.00
0.00Headings0.38
0.06Transitions0.05
Based on 15 + 14 text responses
Research
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FAQ
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