Kiro

Kiro is a spec-driven agentic IDE and CLI. It takes a prompt and pushes the work through structured artifacts: requirements, design, tasks, implementation, tests, and documentation. The core pitch is that AI coding should be traceable and reviewable, not just a chat box that edits files.

Kiro is compatible with Open VSX plugins, themes, and VS Code settings. It supports multimodal chat, specs, steering files, hooks, native MCP integration, autopilot mode, image inputs, commit-message generation, diagnostics, and code diffs.

The product is built around a sharp editorial stance: vibe coding is useful for exploration, but production work needs a spec. Kiro’s specs create requirements.md or bugfix.md, design.md, and tasks.md; steering files carry project conventions; hooks automate routine agent actions around file saves, prompts, tool calls, and task execution.

May 6, 2026: ServiceNow and AWS linked AI Control Tower, Bedrock AgentCore, and Kiro. The integration gives Kiro a governed ServiceNow app-development path for mutual AWS and ServiceNow customers, with shared identity, policy, and audit controls flowing through AgentCore.

What It Actually Is

Kiro tries to make AI coding more like a product-engineering workflow. A feature spec captures user stories and acceptance criteria. The design phase captures architecture, sequence diagrams, data flow, error handling, and testing strategy. The task phase breaks implementation into discrete checklist items that Kiro can execute and update.

Bugfix specs do the same for defects: current behavior, expected behavior, unchanged behavior, root cause, fix design, and validation. That makes Kiro especially interesting for teams that have been burned by agents fixing one symptom while quietly breaking another path.

Steering is the second important layer. Workspace steering files live under .kiro/steering/, global steering files live under ~/.kiro/steering/, and AGENTS.md files can be picked up as steering directives. That gives teams a way to encode code style, architecture, security policies, and testing expectations once instead of repeating them in every prompt.

Hooks are the third layer. They can run agent prompts or shell commands around common events: prompt submit, agent stop, pre/post tool use, file create/save/delete, and pre/post spec task execution. In practical terms, hooks are where teams can enforce formatting, block risky commands, gather context, or kick off tests around agent work.

When To Pick Kiro

• You want requirements before code. Specs make intent explicit before the agent starts rewriting files.
• You are building complex features. Kiro is strongest when design and task planning reduce ambiguity.
• You need team-readable artifacts. Requirements, design, and task files are easier to review than a raw chat transcript.
• You need guardrails per repo. Steering files let teams define coding standards, context, and preferred workflows.
• You want MCP plus IDE ergonomics. Kiro connects to external docs, databases, APIs, and tools.
• You want repeatable team rules. Steering files and hooks make the agent follow the same standards across a codebase.

When To Pick Something Else

• Fast GUI-first agent coding: Cursor.
• Terminal-first autonomous coding: Claude Code.
• Editor-extension approach: Augment Code or GitHub Copilot.
• Open-source or self-configured coding agent: Cline, Aider, or Continue.
• No-code app generation: Lovable, Base44, or Replit Agent.

Pricing

Pricing via Kiro pricing:

Credits are consumed by prompts in vibe mode or spec mode, spec refinement, task execution, and agent hook execution. Kiro’s billing docs say usage caps renew at the start of the billing cycle, and overages are billed at month end when enabled. The pricing page now lists Pro Max at $100/month with 5,000 credits and premium-model access, which fills the old gap between Pro+ and Power. Kiro’s pricing page still showed a 50% Kiro Web promotional usage discount through May 29, 2026; because that date has passed, June budgets should assume standard credit burn unless the account dashboard says otherwise.

Against The Alternatives