What is the difference between Claude 2 and Claude Sonnet 4?

Both are developed by Anthropic but target different use cases. Claude 2 has a 100K token context window vs Claude Sonnet 4's 200K. You can compare their actual outputs across 5 challenges on Rival to see how they differ in practice.

Which is better, Claude 2 or Claude Sonnet 4?

It depends on your use case. Claude 2 and Claude Sonnet 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 5 challenges so you can judge which fits your needs best.

How much does Claude 2 cost compared to Claude Sonnet 4?

Claude 2 costs $11.02/M input tokens and Claude Sonnet 4 costs $3/M input tokens. Claude Sonnet 4 is $8.02/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 2 and Claude Sonnet 4 on Rival?

This page shows a side-by-side comparison of Claude 2 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 2 and Claude Sonnet 4?

Both are developed by Anthropic but target different use cases. Claude 2 has a 100K token context window vs Claude Sonnet 4's 200K. You can compare their actual outputs across 5 challenges on Rival to see how they differ in practice.

Which is better, Claude 2 or Claude Sonnet 4?

It depends on your use case. Claude 2 and Claude Sonnet 4 each have strengths in different areas. Rival lets you compare their real outputs side-by-side across 5 challenges so you can judge which fits your needs best.

How much does Claude 2 cost compared to Claude Sonnet 4?

Claude 2 costs $11.02/M input tokens and Claude Sonnet 4 costs $3/M input tokens. Claude Sonnet 4 is $8.02/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 2 and Claude Sonnet 4 on Rival?

This page shows a side-by-side comparison of Claude 2 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 2 vs Claude Sonnet 4: Which Is Better?

Updated May 2025

Our Verdict

Claude Sonnet 4

Claude 2Runner-up

No community votes yet. On paper, Claude Sonnet 4 has the edge — newer, bigger context window.

Too close to call

What do Claude 2 and Claude Sonnet 4 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 2

Input

$11.02

Output

$32.68

Claude Sonnet 4

Input

$3.00

3.7× cheaper

Output

$15.00

2.2× cheaper

Claude Sonnet 4 is cheaper on both — 3.7× input, 2.2× output

Writing DNA

Style Comparison

Similarity

48%

Claude Sonnet 4 uses 40.1x more hedging

Claude 2

Claude Sonnet 4

65%Vocabulary62%

13wSentence Length111w

0.00Hedging0.40

0.0Bold5.0

10.2Lists9.3

0.00Emoji0.88

0.00Headings2.16

0.00Transitions0.33

Based on 2 + 17 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude 2 vs MiniMax M3New provider

Claude 2 vs GPT-5New provider

Claude 2 vs Claude Opus 4Version compare

Updated May 2025

Our Verdict

Claude Sonnet 4

Claude 2Runner-up

No community votes yet. On paper, Claude Sonnet 4 has the edge — newer, bigger context window.

Too close to call

What do Claude 2 and Claude Sonnet 4 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 2

Input

$11.02

Output

$32.68

Claude Sonnet 4

Input

$3.00

3.7× cheaper

Output

$15.00

2.2× cheaper

Claude Sonnet 4 is cheaper on both — 3.7× input, 2.2× output

Writing DNA

Style Comparison

Similarity

48%

Claude Sonnet 4 uses 40.1x more hedging

Claude 2

Claude Sonnet 4

65%Vocabulary62%

13wSentence Length111w

0.00Hedging0.40

0.0Bold5.0

10.2Lists9.3

0.00Emoji0.88

0.00Headings2.16

0.00Transitions0.33

Based on 2 + 17 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude 2 vs MiniMax M3New provider

Claude 2 vs GPT-5New provider

Claude 2 vs Claude Opus 4Version compare