Kiro vs AIDEN: two takes on spec-driven development.

Kiro is AWS's spec-driven IDE, a polished single agent inside a downloadable VS Code fork. AIDEN applies the same spec-first philosophy to multi-agent orchestration over your own Claude Code and Codex CLIs.

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Quick answer

Kiro is AWS's desktop IDE for spec-driven development: a VS Code fork you download and run locally, where an agent turns a prompt into requirements, design, and tasks before writing code. AIDEN shares the philosophy, spec before code, with an enforced approval gate, but differs in shape: instead of one agent inside an editor, AIDEN orchestrates several Claude Code and Codex agents on parallel git worktrees, tracked on a kanban board. Kiro bundles model access into subscription tiers behind an AWS sign-in; AIDEN is BYOK, it drives the CLIs you already pay Anthropic or OpenAI for.

What AIDEN is: Desktop workspace running your Claude Code + Codex CLIs on parallel git branches
Platform: macOS 12+ (arm64 + x64), signed & notarized
Code privacy: Local, code never leaves your machine
Pricing: Free (1 project) · Solo $19/mo · Lifetime $169 · Team $10/seat

Stick with Kiro when

You want spec-driven development inside a familiar VS Code fork, keeping your extensions and keybindings.
You're on Windows or Linux, Kiro ships there today; AIDEN's desktop app is macOS with Windows/Linux on a waitlist.
You want agent hooks that fire on editor events like file saves.
One well-integrated agent per window is enough for how you work.

Switch to AIDEN when

You want several spec-driven stories running at once, one agent per story, one git worktree per agent.
You already have Claude Code or Codex and would rather orchestrate those than adopt another subscription and an AWS sign-in.
You want a kanban board (Stories / Spec Review / In Progress / Review / Done) as the control surface, not an editor sidebar.
You want to mix Claude and Codex agents on one project and end every story in a one-click PR.

Kiro vs AIDEN, side by side

Across 10 features · AIDEN 4 · Kiro 3

Feature	Kiro	AIDEN
Form factor	Desktop IDE (VS Code fork)	Desktop orchestrator over your CLIs
Runs locally	Yes	Yes
Spec-driven workflow	Yes, requirements, design, tasks	Yes, spec with enforced approval gate
Parallel agents on git worktrees	No	Yes
Kanban story board	No	Yes
Event-driven agent hooks	Yes	No, board-driven stories instead
Bring your own model access	No, Kiro tiers, AWS sign-in	Yes, your Claude Code / Codex CLIs
Windows / Linux desktop	Yes	macOS today; Windows/Linux waitlist
One-click pull requests	No	Yes
Pricing	Subscription tiers: Free / Pro / Pro+	Free, Solo $19/mo or $169 lifetime, Team $10/seat/mo (min 3)

Switching from Kiro?

Download AIDEN free and bring your existing Claude Code or Codex setup. Runs on macOS in minutes, no credit card required.

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Free to start · macOS 12+ · No credit card required

A switcher's take

Kiro and AIDEN start from the same conviction: agents do better work from an approved spec than from a chat prompt. Kiro executes that inside one editor with one agent, and does it with real polish. AIDEN executes it across a team of agents, the spec gate is the entry ticket to a board where each story runs on its own worktree. If you think in editor sessions, Kiro will feel natural; if you think in stories in flight, AIDEN will.

Kiro vs AIDEN, FAQ

Is Kiro cloud-only?

No. Kiro is a downloadable desktop IDE, a VS Code fork for macOS, Windows, and Linux. You sign in (AWS Builder ID among other options) and agent usage is covered by Kiro's subscription tiers. AIDEN is also a local desktop app, but BYOK: it orchestrates your own installed Claude Code or Codex CLI.

Do Kiro and AIDEN both use Claude?

Both can. Kiro's agent uses models provided through its subscription tiers. AIDEN routes work through your own Claude Code CLI (billed on your Anthropic plan) and/or Codex CLI (OpenAI), so model choice, limits, and cost stay under your control.

Does AIDEN support Kiro-style hooks?

No. Kiro's hooks, run an agent when a file is saved, for example, are a genuinely useful editor-native feature AIDEN doesn't copy. AIDEN's automation is story-shaped instead: spec approval, a branch per story, optional LLM PR review, one-click PR.

Is AIDEN cheaper than Kiro?

It depends on usage. Kiro bundles agent usage into Free / Pro / Pro+ tiers. AIDEN charges only for the workspace, Solo $19/mo or a one-time $169 lifetime, and model usage goes through the Anthropic/OpenAI plans you likely already have. Heavy users tend to prefer controlling that spend directly.

Do I need an AWS account for either tool?

Kiro uses an AWS-linked sign-in (such as AWS Builder ID). AIDEN needs nothing from AWS, just macOS 12+ and at least one of Claude Code or Codex CLI installed locally.

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Stop chatting. Start shipping.

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