OpenAI: GPT-5.6 Luna Pro vs Kimi K2.6
Compare OpenAI: GPT-5.6 Luna Pro by OpenAI against Kimi K2.6 by Moonshot AI, context windows of 1.1M vs 262K, tested across 54 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Luna Pro
Kimi K2.6
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Too close to call
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Luna Pro
Input
$1.00
Output
$6.00
Kimi K2.6
Input
$0.95
1.1× cheaper
Output
$4.00
1.5× cheaper
Kimi K2.6 is cheaper on both — 1.1× input, 1.5× output
Writing DNA
Style Comparison
Similarity
42%
OpenAI: GPT-5.6 Luna Pro uses 15.9x more emoji
OpenAI: GPT-5.6 Luna Pro
Kimi K2.6
58%Vocabulary57%
18wSentence Length16w
0.81Hedging0.37
2.9Bold4.3
5.1Lists2.0
0.54Emoji0.03
1.10Headings0.53
0.09Transitions0.16
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
