Claude Opus 5 vs Kimi K2.6
Compare Claude Opus 5 by Anthropic against Kimi K2.6 by Moonshot AI, context windows of 1.0M vs 262K, tested across 54 shared challenges.
Our Verdict
Claude Opus 5
Kimi K2.6Runner-up
No community votes yet. On paper, Claude Opus 5 has the edge — bigger model tier, newer, bigger context window, major provider backing.
Kimi K2.6 is 6.3x cheaper per token — worth considering if cost matters.
Slight edge
API pricing
Cost per 1M tokens
Claude Opus 5
Input
$5.00
Output
$25.00
Kimi K2.6
Input
$0.95
5.3× cheaper
Output
$4.00
6.3× cheaper
Kimi K2.6 is cheaper on both — 5.3× input, 6.3× output
Writing DNA
Style Comparison
Similarity
88%
Kimi K2.6 uses 3.1x more transitions
Claude Opus 5
Kimi K2.6
54%Vocabulary57%
21wSentence Length16w
0.40Hedging0.37
3.9Bold4.3
1.9Lists2.0
0.02Emoji0.03
0.71Headings0.53
0.05Transitions0.16
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
