Claude Opus 5.5 is now available on AWS

What moved

Claude Opus 5.5, Anthropic's most capable Opus model for agentic coding, knowledge work, and long-running tasks, is now available on Amazon Bedrock and Claude Platform on AWS. This post covers what's new in Opus 5.5, practical guidance, and how to start building with the model on Amazon Bedrock.

Why it matters

Filed as a launch filing from AWS, 2026-09-22. Tagged LLM / Enterprise.

On the record

• Filed from the AWS official RSS on 2026-09-22.
• Primary source host: aws.amazon.com.
• Claude Opus 5.5, Anthropic's most capable Opus model for agentic coding, knowledge work, and long-running tasks, is now available on Amazon Bedrock and Claude Platform on AWS.