Version 2.29.0 adds Memory Across Chat Sessions, letting Kiro retain useful context from one local V3 chat to the next. You can set memory access to read-only, read-write, or off, with changes applying to the next session. When Kiro retrieves a memory, the chat shows a Memory entry with the command and title while it works.
Kiro 5.5 brings Claude Opus and Sonnet 5.5 to AWS GovCloud
Claude Opus 5.5 is now available in the Kiro IDE and CLI for both AWS GovCloud US-East and US-West regions. It offers a 1 M-token context window and a 2.0× credit multiplier, optimized for long-running agentic coding tasks. Claude Sonnet 5.5 is also now available in AWS GovCloud US-East and US-West, delivering over 30% faster output. It provides a 1 M-token context window and a 1.3× credit multiplier, bringing Sonnet performance close to Opus 5.5.