GPT-5 vs Kimi K2
Compare GPT-5 by OpenAI against Kimi K2 by Moonshot AI, in 9 community votes, kimi k2 wins 56% of head-to-head duels, tested across 52 shared challenges.
Conversation: Kimi K2 wins 75% of votes
Reasoning: GPT-5 and Kimi K2 are tied
Our Verdict
Kimi K2Winner
GPT-5Runner-up
Kimi K2 has the edge overall. In 9 blind votes, Kimi K2 wins 56% of the time.
Kimi K2 particularly excels in Conversation. Kimi K2 is 4.3x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
GPT-5
Input
$1.25
Output
$10.00
Kimi K2
Input
$0.57
2.2× cheaper
Output
$2.30
4.3× cheaper
Kimi K2 is cheaper on both — 2.2× input, 4.3× output
Writing DNA
Style Comparison
Similarity
72%
Kimi K2 uses 68.5x more emoji
GPT-5
Kimi K2
65%Vocabulary63%
13wSentence Length19w
0.20Hedging0.35
0.2Bold4.2
4.6Lists3.6
0.00Emoji0.68
0.16Headings0.61
0.03Transitions0.06
Based on 16 + 22 text responses
Research
What we learned reading every model
FAQ
Common questions
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