What is the difference between Claude 3 Sonnet and Claude Sonnet 4?

Both are developed by Anthropic but target different use cases. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Sonnet or Claude Sonnet 4?

It depends on your use case. Claude 3 Sonnet and Claude Sonnet 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 13 challenges so you can judge which fits your needs best.

How much does Claude 3 Sonnet cost compared to Claude Sonnet 4?

Claude 3 Sonnet costs $3/M input tokens and Claude Sonnet 4 costs $3/M input tokens. Claude Sonnet 4 is $0.00/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 3 Sonnet and Claude Sonnet 4 on Rival?

This page shows a side-by-side comparison of Claude 3 Sonnet and Claude Sonnet 4 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 3 Sonnet and Claude Sonnet 4?

Both are developed by Anthropic but target different use cases. You can compare their actual outputs across 13 challenges on Rival to see how they differ in practice.

Which is better, Claude 3 Sonnet or Claude Sonnet 4?

It depends on your use case. Claude 3 Sonnet and Claude Sonnet 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 13 challenges so you can judge which fits your needs best.

How much does Claude 3 Sonnet cost compared to Claude Sonnet 4?

Claude 3 Sonnet costs $3/M input tokens and Claude Sonnet 4 costs $3/M input tokens. Claude Sonnet 4 is $0.00/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 3 Sonnet and Claude Sonnet 4 on Rival?

This page shows a side-by-side comparison of Claude 3 Sonnet and Claude Sonnet 4 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 3 Sonnet vs Claude Sonnet 4: Which Is Better?

Updated May 2025

Our Verdict

Claude 3 Sonnet

Claude Sonnet 4

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

API pricing

Cost per 1M tokens

Claude 3 Sonnet

Input

$3.00

Output

$15.00

Claude Sonnet 4

Input

$3.00

Output

$15.00

Writing DNA

Style Comparison

Similarity

46%

Claude Sonnet 4 uses 503.7x more bold

Claude 3 Sonnet

Claude Sonnet 4

48%Vocabulary62%

14wSentence Length111w

0.32Hedging0.40

0.0Bold5.0

3.6Lists9.3

0.00Emoji0.88

0.00Headings2.16

0.38Transitions0.33

Based on 4 + 17 text responses

Research

What we learned reading every model

Claude 3 Sonnet and Claude Sonnet 4 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 3 Sonnet vs MiniMax M3New provider

Claude 3 Sonnet vs GPT-5New provider

Claude 3 Sonnet vs Claude Opus 4Version compare

Updated May 2025

Our Verdict

Claude 3 Sonnet

Claude Sonnet 4

No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.

Too close to call

API pricing

Cost per 1M tokens

Claude 3 Sonnet

Input

$3.00

Output

$15.00

Claude Sonnet 4

Input

$3.00

Output

$15.00

Writing DNA

Style Comparison

Similarity

46%

Claude Sonnet 4 uses 503.7x more bold

Claude 3 Sonnet

Claude Sonnet 4

48%Vocabulary62%

14wSentence Length111w

0.32Hedging0.40

0.0Bold5.0

3.6Lists9.3

0.00Emoji0.88

0.00Headings2.16

0.38Transitions0.33

Based on 4 + 17 text responses

Research

What we learned reading every model

Claude 3 Sonnet and Claude Sonnet 4 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 3 Sonnet vs MiniMax M3New provider

Claude 3 Sonnet vs GPT-5New provider

Claude 3 Sonnet vs Claude Opus 4Version compare