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claude-sonnet-5-5

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Claude Sonnet 5.5 is Anthropic's latest Sonnet model, balancing speed and capability for everyday coding, agents, and enterprise work. It supports a 1M-token context window and up to 128K output tokens.

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1,000,000
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Multimodal
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claude sonnet 5 5

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Model Information
  • Coding: Claude Sonnet 5.5 is built for everyday development work: building features, refactoring, debugging, and code review across large codebases, with the speed to keep interactive coding loops fast.
  • Agents: Claude Sonnet 5.5 works well as both a lead agent and a sub-agent, with reliable multi-step tool use and a cost profile that makes high-volume agentic workloads practical to run at scale.
  • Enterprise workflows: Claude Sonnet 5.5 is a dependable daily driver for knowledge work. It follows instructions closely and produces documents, spreadsheets, and presentations that need fewer rounds of editing.
  • Long context: With a 1M-token context window and up to 128K output tokens, Claude Sonnet 5.5 can work across entire codebases, long reports, and multi-document analysis in a single request.
  • Vision: Claude Sonnet 5.5 reads documents, charts, screenshots, and diagrams, making it well suited to document extraction and visual analysis.
  • Adjustable reasoning: Thinking is adaptive, and reasoning effort can be tuned from low to max, so you can trade depth for speed and cost per request.