What is the difference between Claude Opus 4.1 and Qwen3.5 35B A3B?

Claude Opus 4.1 is developed by Anthropic while Qwen3.5 35B A3B is developed by Qwen. Claude Opus 4.1 has a 200K token context window vs Qwen3.5 35B A3B'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 4.1 or Qwen3.5 35B A3B?

It depends on your use case. Claude Opus 4.1 and Qwen3.5 35B A3B 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 4.1 cost compared to Qwen3.5 35B A3B?

Claude Opus 4.1 costs $15/M input tokens and Qwen3.5 35B A3B costs $0.25/M input tokens. Qwen3.5 35B A3B is $14.75/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 4.1 and Qwen3.5 35B A3B on Rival?

This page shows a side-by-side comparison of Claude Opus 4.1 and Qwen3.5 35B A3B 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 4.1vsQwen3.5 35B A3B

Qwen3.5 35B A3B is cheaper than Claude Opus 4.1 at $0.25/M vs $15/M input tokens.

Claude Opus 4.1 and Qwen3.5 35B A3B compared across 53 shared prompts
Spec	Claude Opus 4.1	Qwen3.5 35B A3B
Input price	$15/M tokens	$0.25/M tokens
Output price	$75/M tokens	$2/M tokens
Context window	200K tokens	262K tokens
Parameters	Not disclosed	35B (3B active)
Weights	Closed	Open
Free API (OpenRouter)	No	No
Released	Aug 2025	Feb 2026
SWE-bench Verified	74.5%	69.2%