Introducing Claude Sonnet 5.5 on AWS
Claude Sonnet 5.5 lands on Bedrock: faster, cheaper, same API surface.
Why it matters
Anthropic's updated Sonnet model is now available on AWS infrastructure with claimed speed and cost improvements. Enterprise buyers using Bedrock can adopt it immediately; practitioners should evaluate whether the efficiency gains justify migration from existing Sonnet deployments.
The key facts
9 to knowClaude Sonnet 5.5 now available on Amazon Bedrock and Claude Platform on AWS
Positioned as 'smarter, more efficient' for coding and knowledge work
Lower cost per task at faster speed claimed; specific pricing and latency benchmarks not disclosed in announcement
Existing story key: anthropic-claude-sonnet-5-5-release
No regional availability, quota, or rollout timeline specified
Claude Sonnet 5.5 released on Amazon Bedrock and Claude Platform on AWS
Lower cost per task and faster speed claimed
No independent benchmarks, performance metrics, or pricing tiers disclosed in announcement
Published Sep 28, 2026
The story so far
Earlier coverage of this storyline
- Claude Opus 5.5 is now available on AWSAWS Machine Learning Blog
- Anthropic debuts Claude Sonnet 5.5 running 30% faster than the previous-generation AI modelSiliconAngle
- Anthropic's Claude Sonnet 5.5 nearly matches Opus 5.5 on benchmarks while costing up to 30 percent less per taskThe Decoder
- This story
Go to the source
AWS Machine Learning Blogaws.amazon.com
Publisher excerpt: 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.