GPT-5.1-Codex-Mini vs Kimi K2.6
Compare GPT-5.1-Codex-Mini by OpenAI against Kimi K2.6 by Moonshot AI, context windows of 400K vs 262K, tested across 54 shared challenges.
Our Verdict
GPT-5.1-Codex-Mini
Kimi K2.6Runner-up
No community votes yet. On paper, GPT-5.1-Codex-Mini has the edge — bigger model tier, bigger context window, major provider backing.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.1-Codex-Mini
Input
$1.50
Output
$6.00
Kimi K2.6
Input
$0.95
1.6× cheaper
Output
$4.00
1.5× cheaper
Kimi K2.6 is cheaper on both — 1.6× input, 1.5× output
Writing DNA
Style Comparison
Similarity
52%
Kimi K2.6 uses 3.4x more emoji
GPT-5.1-Codex-Mini
Kimi K2.6
65%Vocabulary57%
20wSentence Length16w
0.56Hedging0.37
3.3Bold4.3
3.4Lists2.0
0.00Emoji0.03
0.08Headings0.53
0.05Transitions0.16
Based on 13 + 27 text responses
Research
What we learned reading every model
FAQ
