OpenAI: GPT-5.6 Terra vs Kimi K2
Compare OpenAI: GPT-5.6 Terra by OpenAI against Kimi K2 by Moonshot AI, tested across 54 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Terra
Kimi K2
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Kimi K2 is 6.5x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
OpenAI: GPT-5.6 Terra
Input
$2.50
Output
$15.00
Kimi K2
Input
$0.57
4.4× cheaper
Output
$2.30
6.5× cheaper
Kimi K2 is cheaper on both — 4.4× input, 6.5× output
Writing DNA
Style Comparison
Similarity
40%
Kimi K2 uses 68.5x more emoji
OpenAI: GPT-5.6 Terra
Kimi K2
57%Vocabulary63%
18wSentence Length19w
0.85Hedging0.35
2.8Bold4.2
4.6Lists3.6
0.00Emoji0.68
1.12Headings0.61
0.06Transitions0.06
Based on 27 + 22 text responses
Research
What we learned reading every model
FAQ
Common questions
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