What is the difference between Claude 3.7 Thinking Sonnet and Claude Opus 4?

Both are developed by Anthropic but target different use cases. Claude 3.7 Thinking Sonnet has a 200K token context window vs Claude Opus 4's 200K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude 3.7 Thinking Sonnet or Claude Opus 4?

It depends on your use case. Claude 3.7 Thinking Sonnet and Claude Opus 4 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 3.7 Thinking Sonnet cost compared to Claude Opus 4?

Claude 3.7 Thinking Sonnet costs $6/M input tokens and Claude Opus 4 costs $15/M input tokens. Claude 3.7 Thinking Sonnet is $9.00/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 3.7 Thinking Sonnet and Claude Opus 4 on Rival?

This page shows a side-by-side comparison of Claude 3.7 Thinking Sonnet and Claude Opus 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 3.7 Thinking Sonnet and Claude Opus 4?

Both are developed by Anthropic but target different use cases. Claude 3.7 Thinking Sonnet has a 200K token context window vs Claude Opus 4's 200K. You can compare their actual outputs across 53 challenges on Rival to see how they differ in practice.

Which is better, Claude 3.7 Thinking Sonnet or Claude Opus 4?

It depends on your use case. Claude 3.7 Thinking Sonnet and Claude Opus 4 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 3.7 Thinking Sonnet cost compared to Claude Opus 4?

Claude 3.7 Thinking Sonnet costs $6/M input tokens and Claude Opus 4 costs $15/M input tokens. Claude 3.7 Thinking Sonnet is $9.00/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 3.7 Thinking Sonnet and Claude Opus 4 on Rival?

This page shows a side-by-side comparison of Claude 3.7 Thinking Sonnet and Claude Opus 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.

Updated May 2025

Claude 3.7 Thinking SonnetvsClaude Opus 4

Claude 3.7 Thinking Sonnet is cheaper than Claude Opus 4 at $6/M vs $15/M input tokens.

Claude 3.7 Thinking Sonnet and Claude Opus 4 compared across 53 shared prompts
Spec	Claude 3.7 Thinking Sonnet	Claude Opus 4
Input price	$6/M tokens	$15/M tokens
Output price	$30/M tokens	$75/M tokens
Context window	200K tokens	200K tokens
Released	Feb 2025	May 2025
AIME	80.0%	33.9% (w/o extended thinking)

Our Verdict

Claude Opus 4

Claude 3.7 Thinking SonnetRunner-up

Not enough votes to call it. On the specs, Claude Opus 4 has the edge: bigger model tier, newer.

Claude 3.7 Thinking Sonnet takes Web Design.

Too close to call

API pricing

Cost per 1M tokens

Claude 3.7 Thinking Sonnet

Input

$6.00

2.5× cheaper

Output

$30.00

2.5× cheaper

Claude Opus 4

Input

$15.00

Output

$75.00

Claude 3.7 Thinking Sonnet is cheaper on both — 2.5× input, 2.5× output

Writing DNA

Style Comparison

Similarity

60%

Claude Opus 4 uses 118.4x more emoji

Claude 3.7 Thinking Sonnet

Claude Opus 4

62%Vocabulary65%

51wSentence Length57w

0.62Hedging0.67

2.0Bold3.8

4.1Lists6.8

0.00Emoji1.18

1.63Headings1.42

0.17Transitions0.22

Based on 26 + 27 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude 3.7 Thinking Sonnet vs Ox AlphaNew provider

Claude 3.7 Thinking Sonnet vs GPT-5New provider

Claude 3.7 Thinking Sonnet vs MiniMax M1New provider

Claude 3.7 Thinking Sonnet vs MiniMax M3New provider

Claude 3.7 Thinking Sonnet vs Gemma 4 26B A4BNew provider

Claude 3.7 Thinking Sonnet vs Gemma 4 31BNew provider

Claude 3.7 Thinking Sonnet vs GLM 4 32BNew provider

Claude 3.7 Thinking Sonnet vs GLM 4.5New provider

Updated May 2025

Claude 3.7 Thinking SonnetvsClaude Opus 4

Claude 3.7 Thinking Sonnet is cheaper than Claude Opus 4 at $6/M vs $15/M input tokens.

Claude 3.7 Thinking Sonnet and Claude Opus 4 compared across 53 shared prompts
Spec	Claude 3.7 Thinking Sonnet	Claude Opus 4
Input price	$6/M tokens	$15/M tokens
Output price	$30/M tokens	$75/M tokens
Context window	200K tokens	200K tokens
Released	Feb 2025	May 2025
AIME	80.0%	33.9% (w/o extended thinking)

Our Verdict

Claude Opus 4

Claude 3.7 Thinking SonnetRunner-up

Not enough votes to call it. On the specs, Claude Opus 4 has the edge: bigger model tier, newer.

Claude 3.7 Thinking Sonnet takes Web Design.

Too close to call

API pricing

Cost per 1M tokens

Claude 3.7 Thinking Sonnet

Input

$6.00

2.5× cheaper

Output

$30.00

2.5× cheaper

Claude Opus 4

Input

$15.00

Output

$75.00

Claude 3.7 Thinking Sonnet is cheaper on both — 2.5× input, 2.5× output

Writing DNA

Style Comparison

Similarity

60%

Claude Opus 4 uses 118.4x more emoji

Claude 3.7 Thinking Sonnet

Claude Opus 4

62%Vocabulary65%

51wSentence Length57w

0.62Hedging0.67

2.0Bold3.8

4.1Lists6.8

0.00Emoji1.18

1.63Headings1.42

0.17Transitions0.22

Based on 26 + 27 text responses

Research

What we learned reading every model

FAQ

Common questions

Keep exploring

More comparisons

Claude 3.7 Thinking Sonnet vs Ox AlphaNew provider

Claude 3.7 Thinking Sonnet vs GPT-5New provider

Claude 3.7 Thinking Sonnet vs MiniMax M1New provider

Claude 3.7 Thinking Sonnet vs MiniMax M3New provider

Claude 3.7 Thinking Sonnet vs Gemma 4 26B A4BNew provider

Claude 3.7 Thinking Sonnet vs Gemma 4 31BNew provider

Claude 3.7 Thinking Sonnet vs GLM 4 32BNew provider

Claude 3.7 Thinking Sonnet vs GLM 4.5New provider