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Claude Sonnet 4.5 vs Qwen: Qwen3.5 397B A17B

Compare Claude Sonnet 4.5 by Anthropic against Qwen: Qwen3.5 397B A17B by Qwen, in 7 community votes, qwen: qwen3.5 397b a17b wins 57% of head-to-head duels, context windows of 200K vs 262K, tested across 42 shared challenges. Updated April 2026.

Which is better, Claude Sonnet 4.5 or Qwen: Qwen3.5 397B A17B?

Qwen: Qwen3.5 397B A17B is the better choice overall, winning 57% of 7 blind community votes on Rival. Claude Sonnet 4.5 costs $3/M input tokens vs $0.6/M for Qwen: Qwen3.5 397B A17B. Context windows: 200K vs 262K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Sonnet 4.5 and Qwen: Qwen3.5 397B A17B

Claude Sonnet 4.5 is made by anthropic while Qwen: Qwen3.5 397B A17B is from qwen. Claude Sonnet 4.5 has a 200K token context window compared to Qwen: Qwen3.5 397B A17B's 262K. On pricing, Claude Sonnet 4.5 costs $3/M input tokens vs $0.6/M for Qwen: Qwen3.5 397B A17B. In community voting, In 7 community votes, Qwen: Qwen3.5 397B A17B wins 57% of head-to-head duels.

In 7 community votes, Qwen: Qwen3.5 397B A17B wins 57% of head-to-head duels. Qwen: Qwen3.5 397B A17B leads in Image Generation. Based on blind community voting from the Rival open dataset of 7+ human preference judgments for this pair.

Web Design: Claude Sonnet 4.5 and Qwen: Qwen3.5 397B A17B are tied
Image Generation: Qwen: Qwen3.5 397B A17B wins 100% of votes
Our Verdict
Qwen: Qwen3.5 397B A17B
Qwen: Qwen3.5 397B A17BWinner
Claude Sonnet 4.5
Claude Sonnet 4.5Runner-up

Qwen: Qwen3.5 397B A17B has the edge overall. In 7 blind votes, Qwen: Qwen3.5 397B A17B wins 57% of the time.

Qwen: Qwen3.5 397B A17B particularly excels in Image Generation. Qwen: Qwen3.5 397B A17B is 4.2x cheaper per token — worth considering if cost matters.

Slight edge
Writing DNA

Style Comparison

Similarity
97%

Claude Sonnet 4.5 uses 6.5x more sentence length

Claude Sonnet 4.5
Qwen: Qwen3.5 397B A17B
64%Vocabulary54%
94wSentence Length14w
0.48Hedging0.39
4.9Bold6.9
8.0Lists4.2
0.45Emoji0.23
1.91Headings0.93
0.07Transitions0.17
Based on 20 + 23 text responses
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Claude Sonnet 4.5Qwen: Qwen3.5 397B A17B

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AI Hallucination Index 2026
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