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Claude Sonnet 4.5 (2025-09-29)

Latest Claude Sonnet with improved reasoning and extended thinking.

claude-sonnet-4-5-20250929
STABLEGet Started
200,000 context
Starting at $2.10/M (30% off) input tokens
Starting at $10.50/M (30% off) output tokens
Streaming
Tools
Reasoning

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Anthropic
Context: 200k
Input
$3
/M tokens
Cached
$0.3
/M tokens
Output
$15
/M tokens
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AWS Bedrock
Context: 200k30% off
Input
$3$2.1
/M tokens
Cached
$0.3$0.21
/M tokens
Output
$15$10.5
/M tokens
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