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Claude Sonnet 5.5 is Anthropic’s fast everyday model for coding, agents, and knowledge work. It has a 1M-token context and adaptive thinking at half the price of Opus 5.5.

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Best For

  • AI chat features
  • Coding help
  • Agent workflows
  • Knowledge and writing tasks

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Features

  • Fast responses
  • Adaptive thinking
  • 1M-token context
  • Half the price of Opus 5.5

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Ask Vibecode

Tell the AI:
“Add Claude Sonnet 5.5 to my app for fast, capable AI chat.”
The AI will set up the integration automatically.

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Choose This If

Choose Claude Sonnet 5.5 for most Claude-powered features. For tougher tasks, use Claude Opus 5.5.

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Claude Opus 5.5

Stronger Claude for hard tasks