What is the difference between Claude Opus 4.8 and Qwen: Qwen3.5 Flash?

Claude Opus 4.8 is developed by Anthropic while Qwen: Qwen3.5 Flash is developed by Qwen. Claude Opus 4.8 has a 1.0M token context window vs Qwen: Qwen3.5 Flash'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 4.8 or Qwen: Qwen3.5 Flash?

It depends on your use case. Claude Opus 4.8 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 much does Claude Opus 4.8 cost compared to Qwen: Qwen3.5 Flash?

Claude Opus 4.8 costs $5/M input tokens and Qwen: Qwen3.5 Flash costs $0.1/M input tokens. Qwen: Qwen3.5 Flash is $4.90/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 4.8 and Qwen: Qwen3.5 Flash on Rival?

This page shows a side-by-side comparison of Claude Opus 4.8 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 4.8 and Qwen: Qwen3.5 Flash?

Claude Opus 4.8 is developed by Anthropic while Qwen: Qwen3.5 Flash is developed by Qwen. Claude Opus 4.8 has a 1.0M token context window vs Qwen: Qwen3.5 Flash'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 4.8 or Qwen: Qwen3.5 Flash?

It depends on your use case. Claude Opus 4.8 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 much does Claude Opus 4.8 cost compared to Qwen: Qwen3.5 Flash?

Claude Opus 4.8 costs $5/M input tokens and Qwen: Qwen3.5 Flash costs $0.1/M input tokens. Qwen: Qwen3.5 Flash is $4.90/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 4.8 and Qwen: Qwen3.5 Flash on Rival?

This page shows a side-by-side comparison of Claude Opus 4.8 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 4.8 vs Qwen: Qwen3.5 Flash: Which Is Better?

Updated May 2026

Our Verdict

Claude Opus 4.8

Qwen: Qwen3.5 FlashRunner-up

No community votes yet. On paper, Claude Opus 4.8 has the edge — bigger model tier, newer, major provider backing.

Qwen: Qwen3.5 Flash is 63x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Claude Opus 4.8

Input

$5.00

Output

$25.00

Qwen: Qwen3.5 Flash

Input

$0.10

50× cheaper

Output

$0.40

63× cheaper

Qwen: Qwen3.5 Flash is cheaper on both — 50× input, 63× output

Writing DNA

Style Comparison

Similarity

39%

Claude Opus 4.8 uses 30.4x more emoji

Claude Opus 4.8

Qwen: Qwen3.5 Flash

60%Vocabulary50%

19wSentence Length14w

0.46Hedging0.35

4.7Bold6.9

3.2Lists4.2

0.78Emoji0.03

1.15Headings1.00

0.04Transitions0.15

Based on 27 + 23 text responses

Research

What we learned reading every model

Claude Opus 4.8 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 4.8 vs MiniMax M3New provider

Claude Opus 4.8 vs GPT-5New provider

Claude Opus 4.8 vs Llama 4 MaverickNew provider

Updated May 2026

Our Verdict

Claude Opus 4.8

Qwen: Qwen3.5 FlashRunner-up

No community votes yet. On paper, Claude Opus 4.8 has the edge — bigger model tier, newer, major provider backing.

Qwen: Qwen3.5 Flash is 63x cheaper per token — worth considering if cost matters.

Slight edge

API pricing

Cost per 1M tokens

Claude Opus 4.8

Input

$5.00

Output

$25.00

Qwen: Qwen3.5 Flash

Input

$0.10

50× cheaper

Output

$0.40

63× cheaper

Qwen: Qwen3.5 Flash is cheaper on both — 50× input, 63× output

Writing DNA

Style Comparison

Similarity

39%

Claude Opus 4.8 uses 30.4x more emoji

Claude Opus 4.8

Qwen: Qwen3.5 Flash

60%Vocabulary50%

19wSentence Length14w

0.46Hedging0.35

4.7Bold6.9

3.2Lists4.2

0.78Emoji0.03

1.15Headings1.00

0.04Transitions0.15

Based on 27 + 23 text responses

Research

What we learned reading every model

Claude Opus 4.8 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 4.8 vs MiniMax M3New provider

Claude Opus 4.8 vs GPT-5New provider

Claude Opus 4.8 vs Llama 4 MaverickNew provider