Claude Sonnet 5.5 on AWS is now available
AWS Machine Learning Blog: Claude Sonnet 5.5 is now available on Amazon Bedrock and Claude Platform on AWS. Claude Sonnet 5.5 on AWS is now available
By Dillip Chowdary • Oct 01, 2026 • Source: AWS Machine Learning Blog
What shipped in Claude Sonnet 5.5 on AWS is now available
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AWS Machine Learning Blog reports: Introducing Claude Sonnet 5.5 on AWS. Claude Sonnet 5.5 is now available on Amazon Bedrock and Claude Platform on AWS. It's a smarter, more efficient Sonnet model for focused coding and knowledge work, with a lower cost per task at faster speed. This post covers what's new, when to choose Sonnet, and how to get started.
What you gain from Claude Sonnet 5.5 on AWS is now available
For primary quotes and complete technical detail, see AWS Machine Learning Blog's original report linked above.
Developer Action Items
- ☐ Diff the official changelog for Claude / Amazon / AWS 5.5 before you bump — APIs, defaults, and removed flags only.
- ☐ Install through the vendor's documented channel in staging; keep a one-command rollback and time-box the canary.
- ☐ Grep your repo for old flag names, lockfile pins, and plugin versions that the notes mark as breaking.
- ☐ Prefer the first patch cut over the day-zero tag unless you have a reason to be on the leading edge.
- ☐ If AWS Machine Learning Blog did not name a region, plan, or SKU, screenshot the official availability line before you promise it to users.
Author
Dillip Chowdary
Writes Tech Bytes coverage of AI, engineering, and the tools that actually ship. Editor of Tech Pulse Daily.
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