Claude Sonnet 4.5 (EU)

Claude Sonnet 4.5 (EU) represents a regionally hosted iteration of the Sonnet family, deployed through AWS Bedrock on European infrastructure to address data residency and compliance requirements common in regulated industries. This positioning makes it particularly suited for organizations operating under frameworks such as GDPR or those with contractual data localization obligations, where processing must remain within specific geographic boundaries. The model accepts text, images, and PDF documents as inputs, enabling it to handle document analysis, visual understanding, and conversational tasks within unified workflows. Its built-in reasoning capabilities allow it to break down complex problems step-by-step, while tool calling extends its utility into programmatic workflows where structured actions are needed beyond simple text generation.

The model's practical strengths center on its deep integration with AWS Bedrock's serverless architecture, meaning organizations can deploy it without managing underlying infrastructure or model availability. Tool calling enables automation pipelines where the model can invoke external functions or APIs to complete tasks, while temperature control provides output variability management for different creative or deterministic use cases. Its generous context window supports lengthy document processing or multi-turn conversations where preserving conversational history is essential. These capabilities position the model well for enterprise applications requiring reliable, compliant, and versatile AI assistance—from internal knowledge bases to customer-facing interfaces—particularly in environments already invested in AWS ecosystems.