Claude Sonnet 5.5 represents an upgraded Sonnet AI model accessible via Amazon Bedrock and Claude Platform on AWS. It advances coding support by enabling feature development and verification within sessions and enhances knowledge work by generating summaries, diagrams, and document edits. The update aims at faster performance and lower task costs compared to Sonnet 5.
Access through Amazon Bedrock allows for data residency within AWS infrastructure and includes managed features like Guardrails, while direct use of Claude Platform offers native Anthropic experience unified with AWS billing. This release reflects vendor claims of efficiency improvements; real-world performance depends on user scenarios and testing.
Source & further reading
Claude Sonnet 5.5 now available on AWS ↗Source published 2026-09-28. This report was prepared with AI assistance from the linked primary-source material. Claims and limitations should be checked against the original announcement or research.