What is the difference between Claude Opus 5 and Qwen3.5 Plus 2026-02-15?

Claude Opus 5 is developed by Anthropic while Qwen3.5 Plus 2026-02-15 is developed by Qwen. Claude Opus 5 has a 1.0M token context window vs Qwen3.5 Plus 2026-02-15's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 5 or Qwen3.5 Plus 2026-02-15?

It depends on your use case. Claude Opus 5 and Qwen3.5 Plus 2026-02-15 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 5 cost compared to Qwen3.5 Plus 2026-02-15?

Claude Opus 5 costs $5/M input tokens and Qwen3.5 Plus 2026-02-15 costs $0.4/M input tokens. Qwen3.5 Plus 2026-02-15 is $4.60/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 5 and Qwen3.5 Plus 2026-02-15 on Rival?

This page shows a side-by-side comparison of Claude Opus 5 and Qwen3.5 Plus 2026-02-15 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 5 and Qwen3.5 Plus 2026-02-15?

Claude Opus 5 is developed by Anthropic while Qwen3.5 Plus 2026-02-15 is developed by Qwen. Claude Opus 5 has a 1.0M token context window vs Qwen3.5 Plus 2026-02-15's 1.0M. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 5 or Qwen3.5 Plus 2026-02-15?

It depends on your use case. Claude Opus 5 and Qwen3.5 Plus 2026-02-15 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 5 cost compared to Qwen3.5 Plus 2026-02-15?

Claude Opus 5 costs $5/M input tokens and Qwen3.5 Plus 2026-02-15 costs $0.4/M input tokens. Qwen3.5 Plus 2026-02-15 is $4.60/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 5 and Qwen3.5 Plus 2026-02-15 on Rival?

This page shows a side-by-side comparison of Claude Opus 5 and Qwen3.5 Plus 2026-02-15 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 5 vs Qwen3.5 Plus 2026-02-15: Which Is Better?

Updated Jul 2026

Our Verdict

Claude Opus 5

Qwen3.5 Plus 2026-02-15Runner-up

No community votes yet. On paper, Claude Opus 5 has the edge — newer, major provider backing.

Qwen3.5 Plus 2026-02-15 is 10x cheaper per token — worth considering if cost matters.

Too close to call

What do Claude Opus 5 and Qwen3.5 Plus 2026-02-15 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 5

Input

$5.00

Output

$25.00

Qwen3.5 Plus 2026-02-15

Input

$0.40

13× cheaper

Output

$2.40

10× cheaper

Qwen3.5 Plus 2026-02-15 is cheaper on both — 13× input, 10× output

Writing DNA

Style Comparison

Similarity

64%

Qwen3.5 Plus 2026-02-15 uses 5.9x more emoji

Claude Opus 5

Qwen3.5 Plus 2026-02-15

54%Vocabulary54%

21wSentence Length18w

0.40Hedging0.51

3.9Bold5.3

1.9Lists2.9

0.02Emoji0.10

0.71Headings0.75

0.05Transitions0.09

Based on 27 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude Opus 5 vs Ox AlphaNew provider

Claude Opus 5 vs MiniMax M3New provider

Claude Opus 5 vs GPT-5New provider

Updated Jul 2026

Our Verdict

Claude Opus 5

Qwen3.5 Plus 2026-02-15Runner-up

No community votes yet. On paper, Claude Opus 5 has the edge — newer, major provider backing.

Qwen3.5 Plus 2026-02-15 is 10x cheaper per token — worth considering if cost matters.

Too close to call

What do Claude Opus 5 and Qwen3.5 Plus 2026-02-15 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 5

Input

$5.00

Output

$25.00

Qwen3.5 Plus 2026-02-15

Input

$0.40

13× cheaper

Output

$2.40

10× cheaper

Qwen3.5 Plus 2026-02-15 is cheaper on both — 13× input, 10× output

Writing DNA

Style Comparison

Similarity

64%

Qwen3.5 Plus 2026-02-15 uses 5.9x more emoji

Claude Opus 5

Qwen3.5 Plus 2026-02-15

54%Vocabulary54%

21wSentence Length18w

0.40Hedging0.51

3.9Bold5.3

1.9Lists2.9

0.02Emoji0.10

0.71Headings0.75

0.05Transitions0.09

Based on 27 + 23 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude Opus 5 vs Ox AlphaNew provider

Claude Opus 5 vs MiniMax M3New provider

Claude Opus 5 vs GPT-5New provider