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Model details

Claude 4.5 Sonnet

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AI/ML APIanthropic/claude-sonnet-4.5claude-sonnet

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Provider
AI/ML API
Model key
anthropic/claude-sonnet-4.5
Release date
Sep 29, 2025
Last updated
Sep 29, 2025
Knowledge cutoff
2025-07-31
Input modalities
Output modalities
Capabilities

Cost

Input token cost
$4.1262
Output token cost
$20.631

Limits

Output tokens
64,000 tokens
Context window
200,000 tokens

Transparent token rates

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Rates are shown per one million tokens. Combined means one million input plus one million output tokens.

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