Gemini 3.1 Pro Preview vs Kimi K2 Thinking
Compare Gemini 3.1 Pro Preview by Google AI against Kimi K2 Thinking by Moonshot AI, context windows of 1.0M vs 262K, tested across 53 shared challenges.
Our Verdict
Gemini 3.1 Pro Preview
Kimi K2 ThinkingRunner-up
No community votes yet. On paper, Gemini 3.1 Pro Preview has the edge — newer, bigger context window, major provider backing.
Kimi K2 Thinking is 4.8x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Gemini 3.1 Pro Preview
Input
$2.00
Output
$12.00
Kimi K2 Thinking
Input
$0.60
3.3× cheaper
Output
$2.50
4.8× cheaper
Kimi K2 Thinking is cheaper on both — 3.3× input, 4.8× output
Writing DNA
Style Comparison
Similarity
51%
Gemini 3.1 Pro Preview uses 2.5x more transitions
Gemini 3.1 Pro Preview
Kimi K2 Thinking
54%Vocabulary57%
18wSentence Length26w
0.29Hedging0.36
4.9Bold5.8
3.3Lists6.0
0.00Emoji0.00
0.72Headings0.56
0.14Transitions0.06
Based on 23 + 14 text responses
Research
What we learned reading every model
FAQ
