Kiro
Kiro is an agentic coding IDE and CLI that turns prompts into specs, designs and tasks, implements them with parallel agents and checks correctness with property-based tests.
About this tool
Kiro is an AI development environment that adds structure to agentic coding. Instead of jumping straight to code, it turns a prompt into requirements, an architectural design and a sequence of tasks, then implements them with agents that can run in parallel. This spec-driven approach is meant to keep larger features aligned with what the developer intended.
Kiro also focuses on correctness. It generates property-based tests that probe edge cases ordinary unit tests often miss, on the principle that passing tests do not prove code matches intent. A command-line version can start cloud sessions. Pricing is credit-based without daily or weekly rate limits: a free tier offers open-weight models and a Claude model, while paid plans add premium models.
What you can do
Spec-driven development
Prompts become requirements, designs and ordered tasks before implementation.
Parallel agents
Multiple agents implement tasks across large codebases and learn from each session.
Property-based correctness checks
Generated property tests catch edge cases that pass normal unit tests.
Kiro CLI
Run Kiro from the terminal, including starting sessions in the cloud.
Who is it for?
- A team plans a new feature as a reviewable spec before any code is written.
- A developer validates a payment calculation with property-based tests.
- An engineer starts a cloud session from the CLI for a long-running task.
Before you choose
Spec-driven workflows add upfront steps that may feel heavy for tiny changes.
Model availability differs between free and paid plans and by region; check what you can access.
Frequently asked questions
Is Kiro free?
Yes. Kiro Free includes 50 credits with access to open-weight models and a Claude model, subject to limits. Paid plans add credits and premium models.
What is spec-driven development in Kiro?
Kiro converts your prompt into requirements, a design and a task list, then implements those tasks with agents.
How does Kiro pricing work?
Kiro uses monthly credits per plan with no daily or weekly rate limits; extra credits cost $0.04 each on paid plans.
Check the official website for current features, pricing, and terms.
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