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

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

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

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

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

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

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

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

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

This page shows a side-by-side comparison of Claude Opus 4 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 4vsQwen3.5 397B A17B

Qwen3.5 397B A17B is cheaper than Claude Opus 4 at $0.6/M vs $15/M input tokens.

Claude Opus 4 and Qwen3.5 397B A17B compared across 53 shared prompts
Spec	Claude Opus 4	Qwen3.5 397B A17B
Input price	$15/M tokens	$0.6/M tokens
Output price	$75/M tokens	$3.6/M tokens
Context window	200K tokens	262K tokens
Released	May 2025	Feb 2026
SWE-bench Verified	72.5%	76.4%

Our Verdict

Claude Opus 4

Qwen3.5 397B A17B

Not enough votes to call it. On the specs, nothing separates them.

Qwen3.5 397B A17B costs 21x less per token.

Too close to call

What do Claude Opus 4 and Qwen3.5 397B A17B say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Qwen3.5 397B A17B

Input

$0.60

25× cheaper

Output

$3.60

21× cheaper

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

Writing DNA

Style Comparison

Similarity

44%

Claude Opus 4 uses 4.3x more sentence length

Claude Opus 4

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

FAQ

Common questions

Keep exploring

More comparisons

Claude Opus 4 vs Ox AlphaNew provider

Claude Opus 4 vs GPT-5New provider

Claude Opus 4 vs MiniMax M3New provider

Qwen3.5 397B A17B vs MiniMax M1New provider

Claude Opus 4 vs Llama 4 ScoutNew provider

Claude Opus 4 vs MercuryNew provider

Claude Opus 4 vs Mercury 2New provider

Claude Opus 4 vs MiMo-V2-FlashNew provider

Updated Feb 2026

Claude Opus 4vsQwen3.5 397B A17B

Qwen3.5 397B A17B is cheaper than Claude Opus 4 at $0.6/M vs $15/M input tokens.

Claude Opus 4 and Qwen3.5 397B A17B compared across 53 shared prompts
Spec	Claude Opus 4	Qwen3.5 397B A17B
Input price	$15/M tokens	$0.6/M tokens
Output price	$75/M tokens	$3.6/M tokens
Context window	200K tokens	262K tokens
Released	May 2025	Feb 2026
SWE-bench Verified	72.5%	76.4%

Our Verdict

Claude Opus 4

Qwen3.5 397B A17B

Not enough votes to call it. On the specs, nothing separates them.

Qwen3.5 397B A17B costs 21x less per token.

Too close to call

What do Claude Opus 4 and Qwen3.5 397B A17B say about your brand?

10 models, one question, verbatim receipts.

or peek at a demo: Notion Linear Vercel

API pricing

Cost per 1M tokens

Claude Opus 4

Input

$15.00

Output

$75.00

Qwen3.5 397B A17B

Input

$0.60

25× cheaper

Output

$3.60

21× cheaper

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

Writing DNA

Style Comparison

Similarity

44%

Claude Opus 4 uses 4.3x more sentence length

Claude Opus 4

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

FAQ

Common questions

Keep exploring

More comparisons

Claude Opus 4 vs Ox AlphaNew provider

Claude Opus 4 vs GPT-5New provider

Claude Opus 4 vs MiniMax M3New provider

Qwen3.5 397B A17B vs MiniMax M1New provider

Claude Opus 4 vs Llama 4 ScoutNew provider

Claude Opus 4 vs MercuryNew provider

Claude Opus 4 vs Mercury 2New provider

Claude Opus 4 vs MiMo-V2-FlashNew provider