Grok Code Fast 1vsKimi K2
Grok Code Fast 1 is cheaper than Kimi K2 at $0.2/M vs $0.57/M input tokens.
| Spec | Grok Code Fast 1 | Kimi K2 |
|---|---|---|
| Input price | $0.2/M tokens | $0.57/M tokens |
| Output price | $1.5/M tokens | $2.3/M tokens |
| Context window | 256K tokens | — |
| Weights | — | Open |
| Free API (OpenRouter) | No | No |
| Released | Aug 2025 | Jul 2025 |
| SWE-bench Verified | 70.8% | 65.8% |
Our Verdict
Grok Code Fast 1
Kimi K2
Not enough votes to call it. On the specs, nothing separates them.
Too close to call
Reviewing agent-written code?See a Brief PR report
API pricing
Cost per 1M tokens
Grok Code Fast 1
Input
$0.20
2.8× cheaper
Output
$1.50
1.5× cheaper
Kimi K2
Input
$0.57
Output
$2.30
Grok Code Fast 1 is cheaper on both: 2.8× input, 1.5× output.
Where to run it
1 host
Grok Code Fast 1
No hosts listed on OpenRouter.
Kimi K21 host
Per million tokens. Prices and uptime via OpenRouter, checked 11 Sep 2026.
Writing DNA
Style Comparison
Similarity
62%
Kimi K2 uses 11.4x more emoji
Grok Code Fast 1
Kimi K2
61%Vocabulary66%
18wSentence Length19w
0.82Hedging0.34
2.5Bold3.3
2.3Lists3.4
0.05Emoji0.54
0.82Headings0.48
0.09Transitions0.05
Based on 29 + 28 text responses
Research
What we learned reading every model
FAQ
Common questions
Keep exploring
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