OpenAI: GPT-5.6 Terra vs Kimi K2.6
Compare OpenAI: GPT-5.6 Terra by OpenAI against Kimi K2.6 by Moonshot AI, context windows of 1.1M vs 262K, tested across 54 shared challenges.
Our Verdict
OpenAI: GPT-5.6 Terra
Kimi K2.6Runner-up
No community votes yet. On paper, OpenAI: GPT-5.6 Terra has the edge — newer, bigger context window, major provider backing.
Kimi K2.6 is 3.8x 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 K2.6
Input
$0.95
2.6× cheaper
Output
$4.00
3.8× cheaper
Kimi K2.6 is cheaper on both — 2.6× input, 3.8× output
Writing DNA
Style Comparison
Similarity
35%
Kimi K2.6 uses 3.4x more emoji
OpenAI: GPT-5.6 Terra
Kimi K2.6
57%Vocabulary57%
18wSentence Length16w
0.85Hedging0.37
2.8Bold4.3
4.6Lists2.0
0.00Emoji0.03
1.12Headings0.53
0.06Transitions0.16
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
