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Claude Sonnet 4.5 (2025-09-29)

claude Reasoning Tool Calling Structured Output
Providers 1
Released Sep 29, 2025
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Tarsk Use coding

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Provider Model ID Input Cost Output Cost Context Max Output Docs
LLM Gateway claude-sonnet-4-5-20250929 $3.00/MTok $15.00/MTok 200K 64K

Capabilities

Reasoning
Tool Calling
Attachments
Open Weights
Structured Output