Kiro

Description

Kiro is an agentic AI platform for developers and teams that spans an IDE, a CLI, a web interface, a mobile app, and Kiro Crew. It helps you go from prototype to production with spec-driven development: turning prompts into requirements, architectural designs, and sequenced tasks, then implementing them with parallel agents that learn from every session.

Spec-driven development keeps the speed of vibe coding while addressing its limitations. Before writing code, Kiro checks requirements for contradictions and gaps using automated reasoning, then verifies behavior with property-based tests that assert rules across all inputs, catching bugs that pass unit tests but break in production. Agents can also keep working in the cloud when you step away.

Kiro is based on Code OSS, so you can import VS Code settings, themes, and Open VSX compatible plugins. It supports many languages including Python, Java, JavaScript, TypeScript, C#, Go, Rust, PHP, Ruby, Kotlin, C, C++, SQL, and more, and you can sign in with GitHub, Google, AWS Builder ID, or AWS IAM Identity Center without needing an AWS account. Kiro Crew is an open source, persistent development workspace that runs on your machine.

A free plan includes 50 credits with access to open weight models and Claude Sonnet 4.5, and paid plans start at $20/month for 1,000 credits, scaling up to higher tiers with premium model access and add-on credits.

Kiro's Core Features

• Spec-driven development from prompts to tasks

• Parallel agents across large codebases

• Automated reasoning to check requirements

• Property-based tests to catch hidden bugs

• IDE, CLI, web, and mobile surfaces

• Cloud sessions that keep running when you step away

• Code OSS base with VS Code settings import

• Broad language support and steering files across surfaces

How to use Kiro?

1. 1

   Download or sign in: Install Kiro or sign in on the web or mobile.

2. 2

   Authenticate: Log in with GitHub, Google, AWS Builder ID, or IAM Identity Center.

3. 3

   Write a spec: Turn your prompt into requirements, design, and sequenced tasks.

4. 4

   Implement with agents: Let parallel agents build and validate the code.

5. 5

   Review and ship: Check correctness with property-based tests and move from plan to PR.

Kiro's Use Cases

• Spec-driven feature building
• Large codebase changes
• Catching hidden bugs
• Cloud-delegated work
• Cross-surface development

FAQ from Kiro

• What is Kiro?

  Kiro is an agentic AI with an IDE, CLI, web interface, mobile app, and Kiro Crew that turns prompts into executable specs, validates code correctness, and builds across large codebases with parallel agents that learn from every session.

• What is spec-driven development?

  It keeps the fun of vibe coding but fixes its limitations. Kiro defines requirements, system design, and tasks before writing code, documenting the reasoning so it can implement complex tasks in fewer shots.

• How much does Kiro cost?

  A free plan includes 50 credits with access to open weight models and Claude Sonnet 4.5. Paid plans start at $20/month for 1,000 credits, with higher tiers at $40, $100, and $200 and add-on credits at $0.04 each.

• What programming languages does Kiro support?

  Kiro supports many languages including Python, Java, JavaScript, TypeScript, C#, Go, Rust, PHP, Ruby, Kotlin, C, C++, shell scripting, SQL, Scala, JSON, YAML, and HCL.

• Can I import settings from my existing IDE?

  Yes. Kiro is based on Code OSS, so you can import your VS Code settings, themes, and Open VSX compatible plugins during onboarding.

• Do I need an AWS account to use Kiro?

  No. You can log in with GitHub, Google, AWS Builder ID, or AWS IAM Identity Center, and you do not need an AWS account to use Kiro.