Claude 3 Opus vs Claude 3.7 Sonnet
Compare Claude 3 Opus and Claude 3.7 Sonnet, both from Anthropic, context windows of 200K vs 200K, tested across 12 shared challenges. Updated May 2026.
Which is better, Claude 3 Opus or Claude 3.7 Sonnet?
Claude 3 Opus and Claude 3.7 Sonnet are both competitive models. Claude 3 Opus costs $15/M input tokens vs $3/M for Claude 3.7 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 Sonnet
Claude 3 Opus is made by anthropic while Claude 3.7 Sonnet is from anthropic. Claude 3 Opus has a 200K token context window compared to Claude 3.7 Sonnet's 200K. On pricing, Claude 3 Opus costs $15/M input tokens vs $3/M for Claude 3.7 Sonnet.
Per 1M tokens
Claude 3.7 Sonnet is cheaper on both — 5.0× input, 5.0× output
No community votes yet. On paper, these are closely matched - try both with your actual task to see which fits your workflow.
Claude 3.7 Sonnet is 5.0x cheaper per token — worth considering if cost matters.
Style Comparison
Claude 3.7 Sonnet uses 121.0x more bold
