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anthropicModerated

Claude Sonnet 4.5

anthropic/claude-sonnet-4.5

Ratings & Rankings

Input Cost
$3.0000
12/100
Output Cost
$15.0000
11/100
Context Window
1M
79/100
Overall
34/100
34/100

Key Specifications

Context Window1M
Max Output64K
TokenizerClaude
Input Modalitiestext, image, file
Output Modalitiestext

Pricing

Input (per M tokens)$3.0000per million tokens
Output (per M tokens)$15.0000per million tokens

Input & Output

You send
textimagefile
You get
text

Capabilities

✓Function calling
✓Structured outputs
✗Unmoderated

About

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...

Supported parameters

include_reasoningmax_tokensreasoningresponse_formatstopstructured_outputstemperaturetool_choicetoolstop_ktop_p