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

Claude Sonnet 4 is developed by Anthropic while Qwen3.5 397B A17B is developed by Qwen. Claude Sonnet 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 Sonnet 4 or Qwen3.5 397B A17B?

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

Claude Sonnet 4 costs $3/M input tokens and Qwen3.5 397B A17B costs $0.6/M input tokens. Qwen3.5 397B A17B is $2.40/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 Sonnet 4 and Qwen3.5 397B A17B on Rival?

This page shows a side-by-side comparison of Claude Sonnet 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 Sonnet 4 and Qwen3.5 397B A17B?

Claude Sonnet 4 is developed by Anthropic while Qwen3.5 397B A17B is developed by Qwen. Claude Sonnet 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 Sonnet 4 or Qwen3.5 397B A17B?

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

Claude Sonnet 4 costs $3/M input tokens and Qwen3.5 397B A17B costs $0.6/M input tokens. Qwen3.5 397B A17B is $2.40/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 Sonnet 4 and Qwen3.5 397B A17B on Rival?

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

Qwen3.5 397B A17B is cheaper than Claude Sonnet 4 at $0.6/M vs $3/M input tokens.

Claude Sonnet 4 and Qwen3.5 397B A17B compared across 53 shared prompts
Spec	Claude Sonnet 4	Qwen3.5 397B A17B
Input price	$3/M tokens	$0.6/M tokens
Output price	$15/M tokens	$3.6/M tokens
Context window	200K tokens	262K tokens
Released	May 2025	Feb 2026
SWE-bench Verified	72.7%	76.4%

Our Verdict

Qwen3.5 397B A17B

Claude Sonnet 4Runner-up

Not enough votes to call it. On the specs, Qwen3.5 397B A17B has the edge: bigger model tier, newer.

Qwen3.5 397B A17B costs 4.2x less per token.

Too close to call

What do Claude Sonnet 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 Sonnet 4

Input

$3.00

Output

$15.00

Qwen3.5 397B A17B

Input

$0.60

5.0× cheaper

Output

$3.60

4.2× cheaper

Qwen3.5 397B A17B is cheaper on both — 5.0× input, 4.2× output

Writing DNA

Style Comparison

Similarity

44%

Claude Sonnet 4 uses 7.7x more sentence length

Claude Sonnet 4

Qwen3.5 397B A17B

62%Vocabulary54%

111wSentence Length14w

0.40Hedging0.39

5.0Bold6.9

9.3Lists4.2

0.88Emoji0.23

2.16Headings0.93

0.33Transitions0.17

Based on 17 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude Sonnet 4 vs Ox AlphaNew provider

Claude Sonnet 4 vs MiniMax M3New provider

Claude Sonnet 4 vs GPT-5New provider

Qwen3.5 397B A17B vs MiniMax M1New provider

Claude Sonnet 4 vs Grok 4.20 BetaNew provider

Claude Sonnet 4 vs Grok 4.20 Multi-Agent BetaNew provider

Claude Sonnet 4 vs Grok 4.3New provider

Claude Sonnet 4 vs Grok 4.5New provider

Updated Feb 2026

Claude Sonnet 4vsQwen3.5 397B A17B

Qwen3.5 397B A17B is cheaper than Claude Sonnet 4 at $0.6/M vs $3/M input tokens.

Claude Sonnet 4 and Qwen3.5 397B A17B compared across 53 shared prompts
Spec	Claude Sonnet 4	Qwen3.5 397B A17B
Input price	$3/M tokens	$0.6/M tokens
Output price	$15/M tokens	$3.6/M tokens
Context window	200K tokens	262K tokens
Released	May 2025	Feb 2026
SWE-bench Verified	72.7%	76.4%

Our Verdict

Qwen3.5 397B A17B

Claude Sonnet 4Runner-up

Not enough votes to call it. On the specs, Qwen3.5 397B A17B has the edge: bigger model tier, newer.

Qwen3.5 397B A17B costs 4.2x less per token.

Too close to call

What do Claude Sonnet 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 Sonnet 4

Input

$3.00

Output

$15.00

Qwen3.5 397B A17B

Input

$0.60

5.0× cheaper

Output

$3.60

4.2× cheaper

Qwen3.5 397B A17B is cheaper on both — 5.0× input, 4.2× output

Writing DNA

Style Comparison

Similarity

44%

Claude Sonnet 4 uses 7.7x more sentence length

Claude Sonnet 4

Qwen3.5 397B A17B

62%Vocabulary54%

111wSentence Length14w

0.40Hedging0.39

5.0Bold6.9

9.3Lists4.2

0.88Emoji0.23

2.16Headings0.93

0.33Transitions0.17

Based on 17 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude Sonnet 4 vs Ox AlphaNew provider

Claude Sonnet 4 vs MiniMax M3New provider

Claude Sonnet 4 vs GPT-5New provider

Qwen3.5 397B A17B vs MiniMax M1New provider

Claude Sonnet 4 vs Grok 4.20 BetaNew provider

Claude Sonnet 4 vs Grok 4.20 Multi-Agent BetaNew provider

Claude Sonnet 4 vs Grok 4.3New provider

Claude Sonnet 4 vs Grok 4.5New provider