Claude Sonnet 4.5 (EU) API
About
Build advanced reasoning agents with Claude Sonnet 4.5 (EU), a specialized AI model optimized for complex logic and chain-of-thought tasks. This model delivers cost-effective pricing at $3.30/1M input and $16.50/1M output tokens, native tool calling support. Access Claude Sonnet 4.5 (EU) via the Amazon Bedrock API with up to 64K output tokens.
Capabilities
Input Modalities
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Output Modalities
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Limits
Context Window
200K
Tokens
Input Limit
200K
Tokens
Max Output
64K
Tokens
Pricing
Standard (per 1M tokens)
Input
$3.30
Output
$16.50
Caching (per 1M tokens)
Read
$0.33
Write
$4.13
Frequently Asked Questions
Claude Sonnet 4.5 (EU) by Amazon Bedrock costs $3.30 per 1M input tokens and $16.50 per 1M output tokens. Cached reads cost $0.33 per 1M tokens. Cache writes cost $4.13 per 1M tokens.
Model Details
ID
eu.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