ChatGPT-4o (March 2025)vsKimi Linear 48B A3B Instruct
Kimi Linear 48B A3B Instruct is cheaper than ChatGPT-4o (March 2025) at $0.3/M vs $5/M input tokens.
| Spec | ChatGPT-4o (March 2025) | Kimi Linear 48B A3B Instruct |
|---|---|---|
| Input price | $5/M tokens | $0.3/M tokens |
| Output price | $15/M tokens | $0.6/M tokens |
| Context window | 128K tokens | 1.0M tokens |
| Weights | — | Open |
| Free API (OpenRouter) | No | No |
| Released | Mar 2025 | Nov 2025 |
Our Verdict
ChatGPT-4o (March 2025)
Kimi Linear 48B A3B Instruct
Not enough votes to call it. On the specs, nothing separates them.
Kimi Linear 48B A3B Instruct costs 25x less per token.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
ChatGPT-4o (March 2025)
Input
$5.00
Output
$15.00
Kimi Linear 48B A3B Instruct
Input
$0.30
17× cheaper
Output
$0.60
25× cheaper
Kimi Linear 48B A3B Instruct is cheaper on both: 17× input, 25× output.
Writing DNA
Style Comparison
Similarity
50%
ChatGPT-4o (March 2025) uses 94.5x more emoji
ChatGPT-4o (March 2025)
Kimi Linear 48B A3B Instruct
55%Vocabulary63%
24wSentence Length15w
0.52Hedging0.19
3.3Bold5.2
6.0Lists3.2
0.94Emoji0.00
0.63Headings0.38
0.05Transitions0.05
Based on 15 + 14 text responses
Research
What we learned reading every model
FAQ
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