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Anthropic: Claude Sonnet 4.5

Claude Sonnet 4.5 is Anthropic’s most advanced Sonnet model to date, optimized for real-world agents and coding workflows. It delivers state-of-the-art performance on coding benchmarks such as SWE-bench Verified, with...

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Specification
Model ID
anthropic/claude-sonnet-4.5
Modality
Text+image+file >text
Context
1M tokens
Input
$3.00/1M
Output
$15.00/1M
Web search
$10000.00/1M
Updated
Sep 20, 2026
Scores
Capabilities
  • Supports tool calling
  • Supports vision inputs
  • Supports long-context workflows
  • Supports deeper reasoning tasks

Input and output

Accepts Text, Image, File inputs. Returns Text outputs.

Supported parameters

include_reasoningmax_completion_tokensmax_tokensreasoningresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_ktop_p

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