KChangelog
Models: Claude Opus 5.5 now available in AWS GovCloud (US): Claude Opus 5.5 is available in the Kiro IDE and CLI across both AWS GovCloud (US) Regions.
No release notes were published for this version.
Models: Claude Opus 5.5 now available in AWS GovCloud (US): Claude Opus 5.5 is available in the Kiro IDE and CLI across both AWS GovCloud (US) Regions.
Published Oct 9, 2026 (). Newer: IDE: Choose When Kiro Uses Workflows (Oct 22, 2026)