Claude Sonnet 4.6 vs Qwen: Qwen3.5 Plus 2026-02-15
Compare Claude Sonnet 4.6 by Anthropic against Qwen: Qwen3.5 Plus 2026-02-15 by Qwen, in 2 community votes, qwen: qwen3.5 plus 2026-02-15 wins 100% of head-to-head duels, context windows of 1.0M vs 1.0M, tested across 53 shared challenges.
Our Verdict
Qwen: Qwen3.5 Plus 2026-02-15Winner
Claude Sonnet 4.6Runner-up
Pick Qwen: Qwen3.5 Plus 2026-02-15. In 2 blind votes, Qwen: Qwen3.5 Plus 2026-02-15 wins 100% of the time. That's not luck.
Qwen: Qwen3.5 Plus 2026-02-15 is 6.3x cheaper per token — worth considering if cost matters.
Clear winner
API pricing
Cost per 1M tokens
Claude Sonnet 4.6
Input
$3.00
Output
$15.00
Qwen: Qwen3.5 Plus 2026-02-15
Input
$0.40
7.5× cheaper
Output
$2.40
6.3× cheaper
Qwen: Qwen3.5 Plus 2026-02-15 is cheaper on both — 7.5× input, 6.3× output
Writing DNA
Style Comparison
Similarity
43%
Qwen: Qwen3.5 Plus 2026-02-15 uses 4.8x more transitions
Claude Sonnet 4.6
Qwen: Qwen3.5 Plus 2026-02-15
56%Vocabulary54%
36wSentence Length18w
0.53Hedging0.51
5.1Bold5.3
3.4Lists2.9
0.19Emoji0.10
2.10Headings0.75
0.02Transitions0.09
Based on 23 + 23 text responses
Research
What we learned reading every model
FAQ
