Claude Opus 4 vs Qwen3.5 9B

Compare Claude Opus 4 by Anthropic against Qwen3.5 9B by Qwen, context windows of 200K vs 262K, tested across 35 shared challenges. Updated March 2026.

Which is better, Claude Opus 4 or Qwen3.5 9B?

Claude Opus 4 and Qwen3.5 9B are both competitive models. Claude Opus 4 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 and Qwen3.5 9B

Claude Opus 4 is made by anthropic while Qwen3.5 9B is from qwen. Claude Opus 4 has a 200K token context window compared to Qwen3.5 9B's 262K. On pricing, Claude Opus 4 costs $15/M input tokens vs $0.1/M for Qwen3.5 9B.

Our Verdict
Claude Opus 4
Claude Opus 4
Qwen3.5 9B
Qwen3.5 9BRunner-up

No community votes yet. On paper, Claude Opus 4 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
FAQ

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