GPT-4.5 vs MoonshotAI: Kimi K2 0905
Compare GPT-4.5 by OpenAI against MoonshotAI: Kimi K2 0905 by Moonshot AI, context windows of 128K vs 262K, tested across 25 shared challenges.
Our Verdict
GPT-4.5
MoonshotAI: Kimi K2 0905
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
MoonshotAI: Kimi K2 0905 is 60x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
GPT-4.5
Input
$75.00
Output
$150.00
MoonshotAI: Kimi K2 0905
Input
$0.60
125× cheaper
Output
$2.50
60× cheaper
MoonshotAI: Kimi K2 0905 is cheaper on both — 125× input, 60× output
Writing DNA
Style Comparison
Similarity
37%
MoonshotAI: Kimi K2 0905 uses 14.6x more emoji
GPT-4.5
MoonshotAI: Kimi K2 0905
63%Vocabulary62%
16wSentence Length19w
0.57Hedging0.17
4.7Bold3.3
6.4Lists3.4
0.00Emoji0.15
1.30Headings0.83
0.54Transitions0.06
Based on 11 + 22 text responses
Research
What we learned reading every model
FAQ
