Claude Sonnet 4.5 (AU) API
About
Build advanced reasoning agents with Claude Sonnet 4.5 (AU), a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $3.00/1M input and $15.00/1M output tokens, native tool calling support. Access Claude Sonnet 4.5 (AU) via the Amazon Bedrock API with up to 64K output tokens.
Capabilities
Input Modalities
textimagepdf
Output Modalities
text
Limits
Context Window
200K
Tokens
Input Limit
200K
Tokens
Max Output
64K
Tokens
Pricing
Standard (per 1M tokens)
Input
$3.00
Output
$15.00
Caching (per 1M tokens)
Read
$0.30
Write
$3.75
Frequently Asked Questions
Claude Sonnet 4.5 (AU) by Amazon Bedrock costs $3.00 per 1M input tokens and $15.00 per 1M output tokens. Cached reads cost $0.30 per 1M tokens. Cache writes cost $3.75 per 1M tokens.
Model Details
ID
au.anthropic.claude-sonnet-4-5-20250929-v1:0
Provider
Amazon BedrockFamily
claude-sonnet
Release Date
Sep 29, 2025
Knowledge Cutoff
Jul 31, 2025
API Integration
NPM Package
@ai-sdk/amazon-bedrock
Environment Variables
AWS_ACCESS_KEY_ID
AWS_SECRET_ACCESS_KEY
AWS_REGION
AWS_BEARER_TOKEN_BEDROCK