Models
September 28, 2026

Claude Sonnet 5.5 becomes available on Amazon Bedrock

Anthropic’s Claude Sonnet 5.5 is now available on AWS, bringing faster coding, knowledge work and document creation to Amazon Bedrock and Claude Platform with lower costs per task.

Anthropic’s Claude Sonnet 5.5 is now available through Amazon Bedrock and Claude Platform on AWS. The model targets well-scoped coding and knowledge work, including feature development, bug fixes, document editing, spreadsheet cleanup, diagrams and summary slides.

On Amazon Bedrock, Sonnet 5.5 supports a one-million-token context window, 128K output, adaptive reasoning, prompt caching, computer use, Guardrails and Knowledge Bases. Organizations can access it through Bedrock APIs with AWS security, monitoring and regional data residency controls.

Claude Platform on AWS provides Anthropic’s native APIs and development experience through AWS, with unified authentication and billing for enterprise deployments.

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Anthropic

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