Claude Opus 4.8 vs Kimi K2.6
Compare Claude Opus 4.8 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 4.8
Kimi K2.6Runner-up
No community votes yet. On paper, Claude Opus 4.8 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 4.8
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
58%
Claude Opus 4.8 uses 22.9x more emoji
Claude Opus 4.8
Kimi K2.6
60%Vocabulary57%
19wSentence Length16w
0.46Hedging0.37
4.7Bold4.3
3.2Lists2.0
0.78Emoji0.03
1.15Headings0.53
0.04Transitions0.16
Based on 27 + 27 text responses
Research
What we learned reading every model
FAQ
