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Claude Opus 4.1 vs Qwen3.5 9B

Compare Claude Opus 4.1 by Anthropic against Qwen3.5 9B by Qwen, context windows of 200K vs 262K, tested across 26 shared challenges. Updated March 2026.

Which is better, Claude Opus 4.1 or Qwen3.5 9B?

Claude Opus 4.1 and Qwen3.5 9B are both competitive models. Claude Opus 4.1 costs $15/M input tokens vs $0.1/M for Qwen3.5 9B. Context windows: 200K vs 262K tokens. Compare their real outputs side by side below.

Key Differences Between Claude Opus 4.1 and Qwen3.5 9B

Claude Opus 4.1 is made by anthropic while Qwen3.5 9B is from qwen. Claude Opus 4.1 has a 200K token context window compared to Qwen3.5 9B's 262K. On pricing, Claude Opus 4.1 costs $15/M input tokens vs $0.1/M for Qwen3.5 9B.

Our Verdict
Claude Opus 4.1
Claude Opus 4.1
Qwen3.5 9B
Qwen3.5 9BRunner-up

No community votes yet. On paper, Claude Opus 4.1 has the edge — bigger model tier, major provider backing.

Qwen3.5 9B is 500x cheaper per token — worth considering if cost matters.

Too close to call
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