Claude Sonnet 4
Nothing here. The model returned empty. We stared at it for a while.
Claude Sonnet 4 vs Qwen: Qwen3.5 397B A17B
Compare Claude Sonnet 4 by Anthropic against Qwen: Qwen3.5 397B A17B by Qwen, context windows of 200K vs 262K, tested across 33 shared challenges. Updated April 2026.
Which is better, Claude Sonnet 4 or Qwen: Qwen3.5 397B A17B?
Claude Sonnet 4 and Qwen: Qwen3.5 397B A17B are both competitive models. Claude Sonnet 4 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 and Qwen: Qwen3.5 397B A17B
Claude Sonnet 4 is made by anthropic while Qwen: Qwen3.5 397B A17B is from qwen. Claude Sonnet 4 has a 200K token context window compared to Qwen: Qwen3.5 397B A17B's 262K. On pricing, Claude Sonnet 4 costs $3/M input tokens vs $0.6/M for Qwen: Qwen3.5 397B A17B.
Our Verdict
Qwen: Qwen3.5 397B A17B
Claude Sonnet 4Runner-up
No community votes yet. On paper, Qwen: Qwen3.5 397B A17B has the edge — bigger model tier, newer.
Qwen: Qwen3.5 397B A17B is 4.2x cheaper per token — worth considering if cost matters.
Too close to call
Writing DNA
Style Comparison
Similarity
97%
Claude Sonnet 4 uses 7.7x more sentence length
Claude Sonnet 4
Qwen: Qwen3.5 397B A17B
62%Vocabulary54%
111wSentence Length14w
0.40Hedging0.39
5.0Bold6.9
9.3Lists4.2
0.88Emoji0.23
2.16Headings0.93
0.33Transitions0.17
Based on 17 + 23 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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