Built and operated by Amazon Web Services (AWS).

Kiro is a spec-driven agentic IDE, CLI, and web interface that turns prompts into requirements and design docs before generating and verifying code, with event-driven hooks.

Distributed as a desktop IDE built on Code OSS (VS Code compatible), plus a CLI and web app.

Launched in preview in mid-2025 and continuing to add features, including absorbing Amazon Q Developer CLI's role, through 2026.

It exists to make AI-generated code more predictable by making a structured specification, not a chat prompt, the primary unit of work.

Runs on Amazon Bedrock, routing between models such as Claude and Amazon Nova, and requires an AWS or Kiro account.

Closed-source commercial product from AWS, specs and code context are sent to AWS Bedrock-hosted models for processing.