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๐Ÿšจ Anthropic Claude Sonnet 4.5 released! This is exciting. Looking forward to give it a spin. Amazing

๐Ÿšจ Anthropic Claude Sonnet 4.5 released! This is exciting. Looking forward to give it a spin. Amazing to see the pace of innovation at Anthropic and very pleased to be able to use it from day 1 in Amazon Bedrock.

1๏ธโƒฃ Per the launch announcements from AWS and Anthropic, Sonnet 4.5 improves on Claude 4 in tool handling and memory management, and has been observed maintaining focus for over 30 hours on complex, multi-step tasks. AWS positions it for agent use cases like patching security vulnerabilities, financial analysis, and turning research into actionable insights (https://aws.amazon.com/blogs/aws/introducing-claude-sonnet-4-5-in-amazon-bedrock-anthropics-most-intelligent-model-best-for-coding-and-complex-agents/).

2๏ธโƒฃ Claude Sonnet 4.5 also works with Amazon Bedrock AgentCore for building complex agents โ€” AgentCore adds the runtime around the model: session isolation, long-running agent support, and observability. Also, I expect Kiro support for Sonnet 4.5 to follow soon.

โ“ Let me know your view on the latest release!


๐Ÿ“ Last updated: August 13, 2026 โ€” Technical corrections from a quality audit

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