Claude Sonnet 4.5 (2025-09-29)

Latest Claude Sonnet with improved reasoning and extended thinking.

claude-sonnet-4-5-20250929
STABLE
Streaming
Tools
Reasoning

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Anthropic Pricing for Claude Sonnet 4.5 (2025-09-29)

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Anthropic

anthropic/claude-sonnet-4-5-20250929
Context Size
200k
Stability
STABLE
Pricing
Input
$3.00
/M
Cached
$0.30
/M
Output
$15.00
/M
Capabilities
Streaming
Tools
Reasoning
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