Kiro

AWS agentic coding product that turns prompts into specs, then code, tests, and pull requests across IDE, CLI, web, and mobile.

About Kiro

Kiro is an agentic coding service from AWS. It turns a prompt into structured specifications, then into working code, docs, and tests. The same agent harness runs in the Kiro IDE, Kiro CLI, Kiro Web at app.kiro.dev, a mobile app, and Kiro Crew.

Spec driven development is the core workflow. Kiro writes requirements, design, and sequenced tasks, then implements those tasks with parallel agents. Feature specs cover new work. Bugfix specs cover root cause analysis and regression prevention. Property based tests and automated reasoning check whether the code matches the spec and whether requirements contradict each other.

Kiro is built on Amazon Bedrock and uses multiple foundation models. You can sign in with GitHub, Google, AWS Builder ID, or AWS IAM Identity Center. An AWS account is not required for individual use. The IDE can import VS Code settings and Open VSX extensions. The CLI supports headless runs for CI and pull request work. Kiro Crew is a free open source local workspace on GitHub.

Key Features

Spec driven development: Prompts become requirements.md, design.md, and tasks.md before implementation starts.
Parallel agents and sub agents: Independent tasks run in waves. Custom agents and sub agents handle focused work.
Correctness checks: Property based tests and automated reasoning look for gaps, contradictions, and missed edge cases.
Multiple surfaces: One harness across IDE, CLI, web, mobile, and Kiro Crew, with shared specs and steering.
Steering, hooks, skills, and powers: Project rules, event triggers, reusable instruction packs, and packaged MCP tools such as Figma and Terraform.
Enterprise controls: IAM Identity Center, SSO, governance for models and MCP, cost visibility, and GovCloud options.

Pricing

Kiro Free: $0/mo 50 credits per month. Social login or AWS Builder ID users get open weight models such as Qwen3 Coder Next, DeepSeek 3.2, and MiniMax M2.1, plus Claude Sonnet 4.5, subject to rate limits.
Kiro Pro: $20/user/mo 1,000 credits. Premium models including Auto, Claude Sonnet 5, and Claude Opus 5. Extra credits $0.04 each.
Kiro Pro+: $40/user/mo 2,000 credits and premium model access. Extra credits $0.04 each.
Kiro Pro Max: $100/user/mo 5,000 credits and premium model access. Extra credits $0.04 each.
Kiro Power: $200/user/mo 10,000 credits and premium model access. Extra credits $0.04 each.
Enterprise: Custom Centralized billing, SSO, usage analytics, and enterprise security. Available on commercial regions and AWS GovCloud (US). Contact AWS for seat pricing.

First paid upgrade with social login or AWS Builder ID includes $20 toward the subscription. Prices exclude taxes. Kiro Crew is free. Credit cost varies by model. Auto is the 1.0x baseline.

Use Cases

Plan a feature with requirements, design, and tasks before generating code
Diagnose bugs with bugfix specs and regression tests
Open pull requests across GitHub or GitLab repos from Kiro Web
Run headless CLI agents in CI for review and fixes
Apply project standards with steering files, hooks, and MCP tools
Build under enterprise identity, governance, or GovCloud constraints

Pros & Cons

Pros:

Spec first workflow with correctness checks before and after coding
Same agent across IDE, CLI, web, mobile, and local Crew
No AWS account required for individual sign in
Credit plans plus BYO style model mix including open weight options
Enterprise SSO, governance, and GovCloud availability

Cons:

Free tier is 50 credits with rate limits
Extra credits cost $0.04 each after the plan bundle
Not all premium models are available in every country
Cloud sessions for organizations need administrator enablement

Integrations

GitHub, GitLab, Amazon Bedrock, AWS IAM Identity Center, Okta, Entra ID, MCP, ACP, AGENTS.md, Skills.md, Open VSX, VS Code settings, Figma, Terraform, Agent Toolkit for AWS

FAQ

What is Kiro?

Kiro is an AWS agentic coding product that turns prompts into specs, then into code, docs, tests, and pull requests. It runs in the Kiro IDE, CLI, web app, mobile app, and Kiro Crew.

Do I need an AWS account?

No. Individuals can sign in with GitHub, Google, AWS Builder ID, or AWS IAM Identity Center. Organizations that use IAM Identity Center must enable cloud sessions for Kiro Web.

How does spec driven development work?

Kiro writes requirements, design, and a task list first. Agents then implement those tasks in dependency waves. Feature specs cover new work. Bugfix specs cover diagnosis and regression prevention.

Which surfaces can I use?

Download the IDE or CLI from kiro.dev/downloads, use Kiro Web at app.kiro.dev, use the mobile app, or install free open source Kiro Crew from GitHub.

How does pricing work?

Free includes 50 credits. Paid plans start at Kiro Pro for $20 per user per month with 1,000 credits. Higher plans add more credits. Extra credits are $0.04 each. Credits are spent per model at different multipliers versus Auto.

Which models does Kiro use?

Kiro is built on Amazon Bedrock and offers Auto routing plus models such as Claude Sonnet and Opus families, GPT-5.6 Sol, Terra, and Luna, DeepSeek 3.2, MiniMax, GLM-5, and Qwen3 Coder Next. Free tier model access is narrower and rate limited.

Does Kiro train on my code?

AWS documentation states Kiro may use certain content from Free Tier and individual subscribers for service improvement. Enterprise materials state content is not used to train foundation models on Pro, Pro+, Pro Max, or Power subscriptions.

What is Kiro Web?

Kiro Web at app.kiro.dev lets you describe work, connect GitHub or GitLab repositories, iterate in chat, run Autonomous or spec mode, and open pull requests across one or more repos. Automations can run on a schedule.

Categories:

AI Coding Tools Dev Tools