Claude Sonnet 4.5 vs Qwen: Qwen3.5 Plus 2026-02-15

Compare Claude Sonnet 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, context windows of 200K vs 1.0M, tested across 42 shared challenges. Updated February 2026.

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.

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