December 12, 2025

Claude Opus 4.5 support for AWS IAM Identity Center users

We've added support for Claude Opus 4.5 to AWS IAM Identity Center users in both us-east-1 and eu-central-1 regions. Claude Opus 4.5 is available in both the Kiro IDE and Kiro CLI for Pro, Pro+, and Power tier subscribers.

Kiro IDE start screen showing 'Let's build' heading with Vibe and Spec session mode cards, and a model selector dropdown listing Claude Sonnet 4.5 (1.3x credit), Claude Sonnet 4 (1.3x credit), Claude Haiku 4.5 (0.4x credit), and Claude Opus 4.5 (2.2x credit) with Claude Opus 4.5 selected.

Claude Opus 4.5 support for AWS IAM Identity Center users

Claude Opus 4.5 support

Claude Haiku 5.5 Now Available