Anthropic

Claude Sonnet 4.5

Anthropic's most advanced Claude 4.5 model designed for coding, agentic AI workflows, and complex reasoning.

Best for: Complex coding automation, autonomous agent construction, long-context multi-step workflows, advanced reasoning, and real-world task orchestration in enterprise environments.

Intelligence

91

Speed

82

Released

2025-09-29

Training cutoff

2025-02-01

Capabilities

  • reasoning
  • Temperature control
  • Web search
  • Adjustable reasoning effort
  • Image understanding
  • File/document understanding
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