Claude Sonnet 4 vs Claude 3.5 Sonnet
Significantly enhanced over Sonnet 3.7 in coding and reasoning tasks.
No captured outputs for these models yet.
Frequently Asked Questions: Claude Sonnet 4 vs Claude 3.5 Sonnet▼
Which is better, Claude Sonnet 4 or Claude 3.5 Sonnet?
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Based on the Capability Index, Claude Sonnet 4 scores higher (74.7 vs 67.5). However, "better" depends on your use case — pricing, speed, context window, and specific capability needs all matter.
Do both Claude Sonnet 4 and Claude 3.5 Sonnet support vision?
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Claude Sonnet 4 supports vision/image input, but Claude 3.5 Sonnet does not.
What are the key differences between Claude Sonnet 4 and Claude 3.5 Sonnet?
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Key differences: Claude Sonnet 4 has a notably higher capability index (7.2 point gap); only Claude Sonnet 4 supports vision input; only Claude Sonnet 4 offers extended reasoning mode. Compare full specs on this page.
Which model should I choose for my use case?
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If cost is your priority, choose the cheaper option. If you need the highest intelligence for complex tasks, pick the higher-scoring model. For long documents or codebases, choose the larger context window. You can try both Claude Sonnet 4 and Claude 3.5 Sonnet for free on idapt.app to see which performs better for your specific needs.