Today, we’re excited to announce the availability of Claude Sonnet 5.5 on Amazon Bedrock and Claude Platform on AWS .

Claude Sonnet 5.5 is a smarter, more efficient Sonnet model suited for focused coding and knowledge work with lower cost per task for most work at faster speed.

Amazon Bedrock gives you Sonnet 5.5 capabilities while keeping your data within AWS infrastructure with Regional data residency.

It works with the AWS controls your team already uses, including AWS Identity and Access Management (IAM) for access, AWS CloudTrail for audit, Amazon CloudWatch for monitoring, and Amazon Bedrock Guardrails.

Usage appears on your AWS bill.

This post covers Claude Sonnet 5.5’s improvements, practical guidance on when to choose Sonnet, and how to get started on Amazon Bedrock.

What makes Claude Sonnet 5.5 different The improvements stand out on well-scoped work.

Whether a developer assigns it a feature or a bug fix, Sonnet 5.5 completes the work and checks the result against the stated requirements.

It also produces more polished documents and visuals than Sonnet 5, including one-pagers, architecture diagrams, and summary slides.

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