Kiro1.4.121

Kiro turns a prompt into a detailed specification and then into working code, documentation, and tests inside an IDE. Its spec-driven workflow gives developers a concrete path from an initial idea to production-ready work, reducing ambiguity between what they request and what they build. AI agents handle challenging tasks and can automate activities such as writing documentation and generating unit tests.

The IDE combines specs, steering, hooks, and custom agents to shape how work is planned and executed. Developers can use it for simple or complex projects, remain in control throughout the process, and prepare results to share with their team. Published by Amazon Web Services, Kiro runs on Windows with x64 architecture, and the current version is 1.4.121.

Version 1.4.121 lets users set a default timeout for local agent commands and open Markdown links to workspace files directly in the editor. Agent Focus now keeps its file and folder context aligned with the active project, while restored sessions reconnect without leaving a blank chat pane. Background process output cards display their results, Markdown tables retain their styling, and Mermaid diagrams no longer leave stray error graphics during streaming.