Claude 3.7 Thinking Sonnet vs Claude 3 Opus
Compare Claude 3.7 Thinking Sonnet and Claude 3 Opus, both from Anthropic, context windows of 200K vs 200K, tested across 12 shared challenges. Updated April 2026.
Which is better, Claude 3.7 Thinking Sonnet or Claude 3 Opus?
Claude 3.7 Thinking Sonnet and Claude 3 Opus are both competitive models. Claude 3.7 Thinking Sonnet costs $6/M input tokens vs $15/M for Claude 3 Opus. Context windows: 200K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3.7 Thinking Sonnet and Claude 3 Opus
Claude 3.7 Thinking Sonnet is made by anthropic while Claude 3 Opus is from anthropic. Claude 3.7 Thinking Sonnet has a 200K token context window compared to Claude 3 Opus's 200K. On pricing, Claude 3.7 Thinking Sonnet costs $6/M input tokens vs $15/M for Claude 3 Opus.
Our Verdict
Claude 3.7 Thinking Sonnet
Claude 3 Opus
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
Writing DNA
Style Comparison
Similarity
84%
Claude 3.7 Thinking Sonnet uses 223.5x more bold
Claude 3.7 Thinking Sonnet
Claude 3 Opus
61%Vocabulary54%
49wSentence Length14w
0.64Hedging0.48
2.2Bold0.0
4.5Lists3.0
0.00Emoji0.00
1.81Headings0.00
0.21Transitions0.06
Based on 21 + 3 text responses
vsAsk them anything yourself
FAQ