OpenAI: GPT-5.6 Luna vs MoonshotAI: Kimi K3
Compare OpenAI: GPT-5.6 Luna by OpenAI against MoonshotAI: Kimi K3 by Moonshot AI, in 11 community votes, moonshotai: kimi k3 wins 67% of head-to-head duels, context windows of 1.1M vs 1.0M, tested across 54 shared challenges.
Web Design: MoonshotAI: Kimi K3 wins 71% of votes
Image Generation: OpenAI: GPT-5.6 Luna and MoonshotAI: Kimi K3 are tied
Our Verdict
MoonshotAI: Kimi K3Winner
OpenAI: GPT-5.6 LunaRunner-up
Pick MoonshotAI: Kimi K3. In 11 blind votes, MoonshotAI: Kimi K3 wins 67% of the time. That's not luck.
MoonshotAI: Kimi K3 particularly excels in Web Design.
Clear winner
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Luna
Input
$1.00
3.0× cheaper
Output
$6.00
2.5× cheaper
MoonshotAI: Kimi K3
Input
$3.00
Output
$15.00
OpenAI: GPT-5.6 Luna is cheaper on both — 3.0× input, 2.5× output
Writing DNA
Style Comparison
Similarity
47%
MoonshotAI: Kimi K3 uses 77.9x more emoji
OpenAI: GPT-5.6 Luna
MoonshotAI: Kimi K3
59%Vocabulary58%
19wSentence Length21w
0.84Hedging0.46
2.7Bold3.6
4.5Lists3.4
0.00Emoji0.78
1.20Headings0.89
0.10Transitions0.17
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
