What is the difference between Claude Sonnet 4.5 and Qwen3 Coder Flash?

Claude Sonnet 4.5 is developed by Anthropic while Qwen3 Coder Flash is developed by Qwen. Claude Sonnet 4.5 has a 200K token context window vs Qwen3 Coder Flash's 128K. You can compare their actual outputs across 43 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4.5 or Qwen3 Coder Flash?

It depends on your use case. Claude Sonnet 4.5 and Qwen3 Coder Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 43 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4.5 cost compared to Qwen3 Coder Flash?

Claude Sonnet 4.5 costs $3/M input tokens and Qwen3 Coder Flash costs $0.3/M input tokens. Qwen3 Coder Flash is $2.70/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 4.5 and Qwen3 Coder Flash on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4.5 and Qwen3 Coder 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 Sonnet 4.5 and Qwen3 Coder Flash?

Claude Sonnet 4.5 is developed by Anthropic while Qwen3 Coder Flash is developed by Qwen. Claude Sonnet 4.5 has a 200K token context window vs Qwen3 Coder Flash's 128K. You can compare their actual outputs across 43 challenges on Rival to see how they differ in practice.

Which is better, Claude Sonnet 4.5 or Qwen3 Coder Flash?

It depends on your use case. Claude Sonnet 4.5 and Qwen3 Coder Flash each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 43 challenges so you can judge which fits your needs best.

How much does Claude Sonnet 4.5 cost compared to Qwen3 Coder Flash?

Claude Sonnet 4.5 costs $3/M input tokens and Qwen3 Coder Flash costs $0.3/M input tokens. Qwen3 Coder Flash is $2.70/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 4.5 and Qwen3 Coder Flash on Rival?

This page shows a side-by-side comparison of Claude Sonnet 4.5 and Qwen3 Coder 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.

Updated Sep 2025

Claude Sonnet 4.5vsQwen3 Coder Flash

Qwen3 Coder Flash is cheaper than Claude Sonnet 4.5 at $0.3/M vs $3/M input tokens.

Claude Sonnet 4.5 and Qwen3 Coder Flash compared across 43 shared prompts
Spec	Claude Sonnet 4.5	Qwen3 Coder Flash
Input price	$3/M tokens	$0.3/M tokens
Output price	$15/M tokens	$1.5/M tokens
Context window	200K tokens	128K tokens
Released	Sep 2025	Sep 2025
SWE-bench Verified	77.2%	50.3%

Our Verdict

Claude Sonnet 4.5

Qwen3 Coder FlashRunner-up

Not enough votes to call it. On the specs, Claude Sonnet 4.5 has the edge: bigger model tier, bigger context window, major provider backing.

Qwen3 Coder Flash costs 10x less per token.

Slight edge

What do Claude Sonnet 4.5 and Qwen3 Coder Flash 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 4.5

Input

$3.00

Output

$15.00

Qwen3 Coder Flash

Input

$0.30

10× cheaper

Output

$1.50

10× cheaper

Qwen3 Coder Flash is cheaper on both — 10× input, 10× output

Writing DNA

Style Comparison

Similarity

77%

Claude Sonnet 4.5 uses 45.2x more emoji

Claude Sonnet 4.5

Qwen3 Coder Flash

64%Vocabulary60%

94wSentence Length92w

0.48Hedging0.60

4.9Bold6.1

8.0Lists6.2

0.45Emoji0.00

1.91Headings1.64

0.07Transitions0.18

Based on 20 + 22 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Qwen3 Coder Flash vs MiniMax M3New provider

Qwen3 Coder Flash vs Ox AlphaNew provider

Qwen3 Coder Flash vs MiniMax M2.7New provider

Qwen3 Coder Flash vs Aurora AlphaNew provider

Claude Sonnet 4.5 vs Gemini Pro 1.0New provider

Claude Sonnet 4.5 vs Gemma 3 12BNew provider

Claude Sonnet 4.5 vs Gemma 3 27BNew provider

Claude Sonnet 4.5 vs Gemma 3n 2BNew provider

Updated Sep 2025

Claude Sonnet 4.5vsQwen3 Coder Flash

Qwen3 Coder Flash is cheaper than Claude Sonnet 4.5 at $0.3/M vs $3/M input tokens.

Claude Sonnet 4.5 and Qwen3 Coder Flash compared across 43 shared prompts
Spec	Claude Sonnet 4.5	Qwen3 Coder Flash
Input price	$3/M tokens	$0.3/M tokens
Output price	$15/M tokens	$1.5/M tokens
Context window	200K tokens	128K tokens
Released	Sep 2025	Sep 2025
SWE-bench Verified	77.2%	50.3%

Our Verdict

Claude Sonnet 4.5

Qwen3 Coder FlashRunner-up

Not enough votes to call it. On the specs, Claude Sonnet 4.5 has the edge: bigger model tier, bigger context window, major provider backing.

Qwen3 Coder Flash costs 10x less per token.

Slight edge

What do Claude Sonnet 4.5 and Qwen3 Coder Flash 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 4.5

Input

$3.00

Output

$15.00

Qwen3 Coder Flash

Input

$0.30

10× cheaper

Output

$1.50

10× cheaper

Qwen3 Coder Flash is cheaper on both — 10× input, 10× output

Writing DNA

Style Comparison

Similarity

77%

Claude Sonnet 4.5 uses 45.2x more emoji

Claude Sonnet 4.5

Qwen3 Coder Flash

64%Vocabulary60%

94wSentence Length92w

0.48Hedging0.60

4.9Bold6.1

8.0Lists6.2

0.45Emoji0.00

1.91Headings1.64

0.07Transitions0.18

Based on 20 + 22 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Qwen3 Coder Flash vs MiniMax M3New provider

Qwen3 Coder Flash vs Ox AlphaNew provider

Qwen3 Coder Flash vs MiniMax M2.7New provider

Qwen3 Coder Flash vs Aurora AlphaNew provider

Claude Sonnet 4.5 vs Gemini Pro 1.0New provider

Claude Sonnet 4.5 vs Gemma 3 12BNew provider

Claude Sonnet 4.5 vs Gemma 3 27BNew provider

Claude Sonnet 4.5 vs Gemma 3n 2BNew provider