What is the difference between Claude Opus 4.5 and Qwen: Qwen3.5 Flash?

Claude Opus 4.5 is developed by Anthropic while Qwen: Qwen3.5 Flash is developed by Qwen. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.5 or Qwen: Qwen3.5 Flash?

It depends on your use case. Claude Opus 4.5 and Qwen: Qwen3.5 Flash 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 can I compare Claude Opus 4.5 and Qwen: Qwen3.5 Flash on Rival?

This page shows a side-by-side comparison of Claude Opus 4.5 and Qwen: Qwen3.5 Flash 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 4.5 and Qwen: Qwen3.5 Flash?

Claude Opus 4.5 is developed by Anthropic while Qwen: Qwen3.5 Flash is developed by Qwen. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude Opus 4.5 or Qwen: Qwen3.5 Flash?

It depends on your use case. Claude Opus 4.5 and Qwen: Qwen3.5 Flash 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 can I compare Claude Opus 4.5 and Qwen: Qwen3.5 Flash on Rival?

This page shows a side-by-side comparison of Claude Opus 4.5 and Qwen: Qwen3.5 Flash 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 4.5 vs Qwen: Qwen3.5 Flash: Which Is Better?

Updated Feb 2026

Our Verdict

Claude Opus 4.5

Qwen: Qwen3.5 FlashRunner-up

No community votes yet. On paper, Claude Opus 4.5 has the edge — bigger model tier, major provider backing.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.5

Input

—

Output

—

Qwen: Qwen3.5 Flash

Input

$0.10

Output

$0.40

Writing DNA

Style Comparison

Similarity

29%

Claude Opus 4.5 uses 5.9x more emoji

Claude Opus 4.5

Qwen: Qwen3.5 Flash

64%Vocabulary50%

55wSentence Length14w

0.86Hedging0.35

5.8Bold6.9

4.5Lists4.2

0.15Emoji0.03

1.59Headings1.00

0.05Transitions0.15

Based on 24 + 23 text responses

Research

What we learned reading every model

Claude Opus 4.5 and Qwen: Qwen3.5 Flash 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 4.5 vs MiniMax M3New provider

Claude Opus 4.5 vs GPT-5New provider

Claude Opus 4.5 vs Llama 4 MaverickNew provider

Updated Feb 2026

Our Verdict

Claude Opus 4.5

Qwen: Qwen3.5 FlashRunner-up

No community votes yet. On paper, Claude Opus 4.5 has the edge — bigger model tier, major provider backing.

Too close to call

API pricing

Cost per 1M tokens

Claude Opus 4.5

Input

—

Output

—

Qwen: Qwen3.5 Flash

Input

$0.10

Output

$0.40

Writing DNA

Style Comparison

Similarity

29%

Claude Opus 4.5 uses 5.9x more emoji

Claude Opus 4.5

Qwen: Qwen3.5 Flash

64%Vocabulary50%

55wSentence Length14w

0.86Hedging0.35

5.8Bold6.9

4.5Lists4.2

0.15Emoji0.03

1.59Headings1.00

0.05Transitions0.15

Based on 24 + 23 text responses

Research

What we learned reading every model

Claude Opus 4.5 and Qwen: Qwen3.5 Flash 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 4.5 vs MiniMax M3New provider

Claude Opus 4.5 vs GPT-5New provider

Claude Opus 4.5 vs Llama 4 MaverickNew provider