Claude Sonnet 4.5 vs Claude Sonnet 4
Compare Claude Sonnet 4.5 and Claude Sonnet 4, both from Anthropic, in 23 community votes, claude sonnet 4.5 wins 82% of head-to-head duels, context windows of 200K vs 200K, tested across 43 shared challenges. Updated June 2026.
Which is better, Claude Sonnet 4.5 or Claude Sonnet 4?
Claude Sonnet 4.5 is the better choice overall, winning 82% of 23 blind community votes on Rival. Claude Sonnet 4.5 costs $3/M input tokens vs $3/M for Claude Sonnet 4. Context windows: 200K vs 200K tokens. Compare their real outputs side by side below.
Key Differences Between Claude Sonnet 4.5 and Claude Sonnet 4
Claude Sonnet 4.5 is made by anthropic while Claude Sonnet 4 is from anthropic. Claude Sonnet 4.5 has a 200K token context window compared to Claude Sonnet 4's 200K. On pricing, Claude Sonnet 4.5 costs $3/M input tokens vs $3/M for Claude Sonnet 4. In community voting, In 23 community votes, Claude Sonnet 4.5 wins 82% of head-to-head duels.
In 23 community votes, Claude Sonnet 4.5 wins 82% of head-to-head duels. Claude Sonnet 4.5 leads in Web Design, Reasoning, Image Generation. Based on blind community voting from the Rival open dataset of 23+ human preference judgments for this pair.
Per 1M tokens
Pick Claude Sonnet 4.5. In 23 blind votes, Claude Sonnet 4.5 wins 82% of the time. That's not luck.
Claude Sonnet 4.5 particularly excels in Reasoning, Web Design, Image Generation.
Style Comparison
Claude Sonnet 4 uses 4.4x more transitions
