What is the difference between Claude Opus 4.6 and Qwen3.5 397B A17B?

Claude Opus 4.6 is developed by Anthropic while Qwen3.5 397B A17B is developed by Qwen. Claude Opus 4.6 has a 1.0M token context window vs Qwen3.5 397B A17B's 262K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.6 or Qwen3.5 397B A17B?

It depends on your use case. Claude Opus 4.6 and Qwen3.5 397B A17B each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 53 challenges so you can judge which fits your needs best.

How much does Claude Opus 4.6 cost compared to Qwen3.5 397B A17B?

Claude Opus 4.6 costs $5/M input tokens and Qwen3.5 397B A17B costs $0.6/M input tokens. Qwen3.5 397B A17B is $4.40/M cheaper per input. Check their side-by-side outputs on Rival to see if the price difference is justified by quality.

How can I compare Claude Opus 4.6 and Qwen3.5 397B A17B on Rival?

This page shows a side-by-side comparison of Claude Opus 4.6 and Qwen3.5 397B A17B across shared challenges. You can vote on which model produced the better output in a blind duel. Browsing and voting are free. No account is needed to look; signing in only saves your votes and likes.

Updated Feb 2026

Claude Opus 4.6vsQwen3.5 397B A17B

Qwen3.5 397B A17B is cheaper than Claude Opus 4.6 at $0.6/M vs $5/M input tokens.

Claude Opus 4.6 and Qwen3.5 397B A17B compared across 53 shared prompts
Spec	Claude Opus 4.6	Qwen3.5 397B A17B
Input price	$5/M tokens	$0.6/M tokens
Output price	$25/M tokens	$3.6/M tokens
Context window	1.0M tokens	262K tokens
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	Feb 2026	Feb 2026
SWE-bench Verified	80.8%	76.4%