GPT-5.4 Pro vs MoonshotAI: Kimi K3
Compare GPT-5.4 Pro by OpenAI against MoonshotAI: Kimi K3 by Moonshot AI, context windows of 1.1M vs 1.0M, tested across 18 shared challenges.
Our Verdict
GPT-5.4 Pro
MoonshotAI: Kimi K3
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
MoonshotAI: Kimi K3 is 12x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-5.4 Pro
Input
$30.00
Output
$180.00
MoonshotAI: Kimi K3
Input
$3.00
10× cheaper
Output
$15.00
12× cheaper
MoonshotAI: Kimi K3 is cheaper on both — 10× input, 12× output
Writing DNA
Style Comparison
Similarity
42%
MoonshotAI: Kimi K3 uses 77.9x more emoji
GPT-5.4 Pro
MoonshotAI: Kimi K3
50%Vocabulary58%
35wSentence Length21w
0.70Hedging0.46
7.5Bold3.6
8.3Lists3.4
0.00Emoji0.78
2.52Headings0.89
0.01Transitions0.17
Based on 12 + 27 text responses
Research
What we learned reading every model
FAQ
Common questions
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