Claude Opus 4.5
Nothing here. The model returned empty. We stared at it for a while.
Claude Opus 4.5 vs Qwen: Qwen3.5 Plus 2026-02-15
Compare Claude Opus 4.5 by Anthropic against Qwen: Qwen3.5 Plus 2026-02-15 by Qwen, in 1 community votes, qwen: qwen3.5 plus 2026-02-15 wins 100% of head-to-head duels, tested across 53 shared challenges. Updated April 2026.
Which is better, Claude Opus 4.5 or Qwen: Qwen3.5 Plus 2026-02-15?
Qwen: Qwen3.5 Plus 2026-02-15 is the better choice overall, winning 100% of 1 blind community votes on Rival. Compare their real outputs side by side below.
Key Differences Between Claude Opus 4.5 and Qwen: Qwen3.5 Plus 2026-02-15
Claude Opus 4.5 is made by anthropic while Qwen: Qwen3.5 Plus 2026-02-15 is from qwen. In community voting, In 1 community votes, Qwen: Qwen3.5 Plus 2026-02-15 wins 100% of head-to-head duels.
In 1 community votes, Qwen: Qwen3.5 Plus 2026-02-15 wins 100% of head-to-head duels. Based on blind community voting from the Rival open dataset of 1+ human preference judgments for this pair.
Our Verdict
Qwen: Qwen3.5 Plus 2026-02-15Winner
Claude Opus 4.5Runner-up
Pick Qwen: Qwen3.5 Plus 2026-02-15. In 1 blind votes, Qwen: Qwen3.5 Plus 2026-02-15 wins 100% of the time. That's not luck.
Clear winner
Writing DNA
Style Comparison
Similarity
97%
Claude Opus 4.5 uses 3.1x more sentence length
Claude Opus 4.5
Qwen: Qwen3.5 Plus 2026-02-15
64%Vocabulary54%
55wSentence Length18w
0.86Hedging0.51
5.8Bold5.3
4.5Lists2.9
0.15Emoji0.10
1.59Headings0.75
0.05Transitions0.09
Based on 24 + 23 text responses
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We read every word. 250 models. 2.14 million words. This is what we found.
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