What is the difference between Claude Opus 4 and Qwen: Qwen3.5 397B A17B?

Claude Opus 4 is developed by Anthropic while Qwen: Qwen3.5 397B A17B is developed by Qwen. Claude Opus 4 has a 200K token context window vs Qwen: 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 or Qwen: Qwen3.5 397B A17B?

It depends on your use case. Claude Opus 4 and Qwen: 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 cost compared to Qwen: Qwen3.5 397B A17B?

Claude Opus 4 costs $15/M input tokens and Qwen: Qwen3.5 397B A17B costs $0.6/M input tokens. Qwen: Qwen3.5 397B A17B is $14.40/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 and Qwen: Qwen3.5 397B A17B on Rival?

This page shows a side-by-side comparison of Claude Opus 4 and Qwen: 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.

What is the difference between Claude Opus 4 and Qwen: Qwen3.5 397B A17B?

Claude Opus 4 is developed by Anthropic while Qwen: Qwen3.5 397B A17B is developed by Qwen. Claude Opus 4 has a 200K token context window vs Qwen: 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 or Qwen: Qwen3.5 397B A17B?

It depends on your use case. Claude Opus 4 and Qwen: 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 cost compared to Qwen: Qwen3.5 397B A17B?

Claude Opus 4 costs $15/M input tokens and Qwen: Qwen3.5 397B A17B costs $0.6/M input tokens. Qwen: Qwen3.5 397B A17B is $14.40/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 and Qwen: Qwen3.5 397B A17B on Rival?

This page shows a side-by-side comparison of Claude Opus 4 and Qwen: 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.

Claude Opus 4 vs Qwen: Qwen3.5 397B A17B: Which Is Better?

Updated Feb 2026

Our Verdict

Claude Opus 4

Qwen: Qwen3.5 397B A17B

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Qwen: Qwen3.5 397B A17B is 21x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Qwen: Qwen3.5 397B A17B

Input

$0.60

25× cheaper

Output

$3.60

21× cheaper

Qwen: Qwen3.5 397B A17B is cheaper on both — 25× input, 21× output

Writing DNA

Style Comparison

Similarity

43%

Claude Opus 4 uses 4.3x more sentence length

Claude Opus 4

Qwen: Qwen3.5 397B A17B

64%Vocabulary54%

62wSentence Length14w

0.52Hedging0.39

4.4Bold6.9

9.1Lists4.2

0.11Emoji0.23

1.87Headings0.93

0.27Transitions0.17

Based on 16 + 23 text responses

Research

What we learned reading every model

Claude Opus 4 and Qwen: Qwen3.5 397B A17B have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Claude Opus 4 vs GPT-5New provider

Claude Opus 4 vs MiniMax M3New provider

Claude Opus 4 vs Llama 4 MaverickNew provider

Updated Feb 2026

Our Verdict

Claude Opus 4

Qwen: Qwen3.5 397B A17B

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Qwen: Qwen3.5 397B A17B is 21x cheaper per token — worth considering if cost matters.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Qwen: Qwen3.5 397B A17B

Input

$0.60

25× cheaper

Output

$3.60

21× cheaper

Qwen: Qwen3.5 397B A17B is cheaper on both — 25× input, 21× output

Writing DNA

Style Comparison

Similarity

43%

Claude Opus 4 uses 4.3x more sentence length

Claude Opus 4

Qwen: Qwen3.5 397B A17B

64%Vocabulary54%

62wSentence Length14w

0.52Hedging0.39

4.4Bold6.9

9.1Lists4.2

0.11Emoji0.23

1.87Headings0.93

0.27Transitions0.17

Based on 16 + 23 text responses

Research

What we learned reading every model

Claude Opus 4 and Qwen: Qwen3.5 397B A17B have opinions about your brand too.Ask 10 models what they tell people about you. Verbatim receipts.Run the mirror

FAQ

Common questions

Keep exploring

More comparisons

Claude Opus 4 vs GPT-5New provider

Claude Opus 4 vs MiniMax M3New provider

Claude Opus 4 vs Llama 4 MaverickNew provider