Claude Opus 4 vs Qwen: Qwen3.5 Plus 2026-02-15
Compare Claude Opus 4 by Anthropic against Qwen: Qwen3.5 Plus 2026-02-15 by Qwen, context windows of 200K vs 1.0M, tested across 53 shared challenges.
Our Verdict
Claude Opus 4
Qwen: Qwen3.5 Plus 2026-02-15
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Qwen: Qwen3.5 Plus 2026-02-15 is 31x cheaper per token — worth considering if cost matters.
Too close to call
API pricing
Cost per 1M tokens
Claude Opus 4
Input
$15.00
Output
$75.00
Qwen: Qwen3.5 Plus 2026-02-15
Input
$0.40
38× cheaper
Output
$2.40
31× cheaper
Qwen: Qwen3.5 Plus 2026-02-15 is cheaper on both — 38× input, 31× output
Writing DNA
Style Comparison
Similarity
38%
Claude Opus 4 uses 3.5x more sentence length
Claude Opus 4
Qwen: Qwen3.5 Plus 2026-02-15
64%Vocabulary54%
62wSentence Length18w
0.52Hedging0.51
4.4Bold5.3
9.1Lists2.9
0.11Emoji0.10
1.87Headings0.75
0.27Transitions0.09
Based on 16 + 23 text responses
Research
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