Claude 3 Opus vs Claude 3.7 Thinking Sonnet
Compare Claude 3 Opus and Claude 3.7 Thinking Sonnet, both from Anthropic, context windows of 200K vs 200K, tested across 12 shared challenges. Updated April 2026.
Which is better, Claude 3 Opus or Claude 3.7 Thinking Sonnet?
Claude 3 Opus and Claude 3.7 Thinking Sonnet are both competitive models. Claude 3 Opus costs $15/M input tokens vs $6/M for Claude 3.7 Thinking Sonnet. Context windows: 200K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between Claude 3 Opus and Claude 3.7 Thinking Sonnet
Claude 3 Opus is made by anthropic while Claude 3.7 Thinking Sonnet is from anthropic. Claude 3 Opus has a 200K token context window compared to Claude 3.7 Thinking Sonnet's 200K. On pricing, Claude 3 Opus costs $15/M input tokens vs $6/M for Claude 3.7 Thinking Sonnet.
Our Verdict
Claude 3 Opus
Claude 3.7 Thinking Sonnet
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 Opus
Claude 3.7 Thinking Sonnet
54%Vocabulary61%
14wSentence Length49w
0.48Hedging0.64
0.0Bold2.2
3.0Lists4.5
0.00Emoji0.00
0.00Headings1.81
0.06Transitions0.21
Based on 3 + 21 text responses
vsAsk them anything yourself
279 AI models invented the same fake scientist.
We read every word. 250 models. 2.14 million words. This is what we found.
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