Amazon made a quiet but significant move on May 7, 2026: Amazon Q Developer was officially retired and replaced with AWS Kiro — a fundamentally different take on AI-assisted development.
I spent the first week using Kiro on real production work. This is what I found.
TL;DR
- Kiro = Amazon's new AI IDE, replaces Q Developer entirely
- Core idea: spec-driven development — AI writes specs before writing code
- Free tier + $20/mo Pro (same price as Cursor)
- Best for: AWS teams, complex feature development, GovCloud compliance
- Not ideal for: JetBrains/VS users, pure speed-focused workflows, non-AWS stacks
The Core Concept: Spec-Driven Development
Every other AI coding tool follows the same basic loop: prompt → code → review → iterate.
Kiro breaks that loop. Instead:
- You describe what you want to build in natural language
- Kiro generates a structured specification — user stories, data models, API contracts, edge cases, dependency list
- You review, edit, and approve the spec
- Only then does code generation begin
The first time I saw this I thought "extra friction." Then I caught an authentication edge case at the spec stage that would have been a subtle production bug two weeks later. That changed my opinion fast.
// Traditional AI flow:
prompt("Add JWT auth with refresh tokens") → code → discover edge cases → rework → ...
// Kiro Spec Mode flow:
describe("Add JWT auth with refresh tokens")
→ Kiro generates spec with user stories, data models, error scenarios
→ you spot the edge case in the spec
→ approve → clean code on first generation
Q Developer Migration Timeline
If you're still on Q Developer, here's what matters:
| Date | Event |
|---|---|
| May 7, 2026 | Kiro launches, Q Developer retired |
| May 15, 2026 | New Q Developer sign-ups blocked |
| May 29, 2026 | Latest models (Claude Opus 4.7+) exclusive to Kiro |
| April 30, 2027 | Q Developer Pro end of support |
The real problem with staying on Q Developer isn't the deadline — it's that you're locked to an older model stack right now. That gap widens every month.
Kiro's Two Modes Explained
Spec Mode ($0.20/credit)
For complex features. Full spec generation before any code is written. Catches ambiguities at planning stage, not debugging stage.
When to use: New features, architectural changes, anything where rework is expensive.
Vibe Mode ($0.04/credit)
Traditional AI coding flow — prompt, code, iterate. Fast, no overhead.
When to use: Quick scripts, prototypes, simple tasks, anything you'd normally tab-complete your way through.
Most developers split roughly 60% Spec / 40% Vibe once they get comfortable with both modes.
Kiro vs Cursor vs GitHub Copilot
I've written a full Cursor vs Windsurf vs GitHub Copilot comparison if you want the deep dive, but here's the Kiro-specific breakdown:
| Feature | AWS Kiro | Cursor | GitHub Copilot |
|---|---|---|---|
| Type | Standalone IDE | VS Code fork | Extension |
| Philosophy | Spec-first | Code-first | AI-assisted |
| Price | Free + $20/mo | Free + $20/mo | $10/mo |
| Tab Completion | ⚠️ Slower | ✅ Best-in-class | ✅ Fast |
| Complex Features | ✅ Spec mode | ✅ Composer | ⚠️ Context limits |
| AWS Native | ✅ Yes | ❌ No | ⚠️ GitHub only |
| Open Source | ✅ Yes | ❌ No | ❌ No |
| GovCloud | ✅ Yes | ❌ No | ❌ No |
The honest version: Cursor wins on tab completion speed — Kiro's own supporters admit this. But for complex AWS feature work, Kiro's spec workflow saves time Cursor can't match.
The emerging pattern in 2026: Cursor for daily editing, Kiro for complex features, Claude Code for deep terminal reasoning. Not replacement — specialization. More on how these tools relate in my Claude Code vs Cursor vs GitHub Copilot 2026 breakdown.
Pricing — Is the Free Tier Enough?
Free tier: Enough for genuine evaluation. Not unlimited, but enough to know if the workflow fits.
Pro ($20/month): ~225 vibe-mode + 125 spec-mode requests/month.
That's fewer raw requests than Q Developer's ~1,000/month at the same price. But the math works differently: one spec-mode session building a complex feature can replace 15–20 vibe-mode iterations. Quality per credit is higher, raw volume is lower.
For enterprise: GovCloud support is a genuine differentiator. If your org has compliance requirements that block standard cloud tools, Kiro clears that bar. Cursor and Copilot don't.
Agent Hooks — Kiro's Most Underrated Feature
Agent Hooks let you define automation triggers inside your development workflow:
# Example: auto type-check on save
on_save:
- run: tsc --noEmit
- notify: "Type errors found" if exit_code != 0
# Example: auto-generate docs on PR create
on_pr_create:
- run: kiro doc-gen ./src
- commit: "docs: auto-generated from PR"
With native AWS integration, this gets powerful — Lambda updates, CloudFormation changes, and serverless deployments can hook directly into your coding workflow. This is the feature that makes "native AWS IDE" mean something real rather than just marketing.
Quick Setup Guide
# 1. Download from kiro.dev (Windows/macOS/Linux)
# 2. Connect AWS account or create Kiro account
# 3. Import VS Code profile on first launch (~80% transfers cleanly)
# 4. Open project — Kiro scans and builds context automatically
# 5. Try first spec: Command Palette → "New Spec"
JetBrains: CLI-based ACP integration available, no native plugin.
Visual Studio / Eclipse: No native support. This is a real blocker, worth knowing before planning a migration.
Browser-based tools stay useful alongside any IDE regardless of environment — I use JWT Decoder & Verifier, Regex Tester, Unix Timestamp Converter, and JWT Secret Key Generator as IDE-independent companions throughout.
Who Should Actually Switch?
✅ Switch if:
- You're on Q Developer (migration is inevitable, sooner is better given the model gap)
- You work with AWS regularly (Lambda, Bedrock, ECS, RDS, CloudFormation)
- You build complex features where spec-driven planning reduces rework
- GovCloud compliance is a requirement
- Open-source tooling matters to your team
⚠️ Hold off if:
- Your IDE is JetBrains, Visual Studio, or Eclipse — native support isn't there yet
- Tab completion speed is your primary metric
- Your stack is primarily GCP or Azure
- You're solo and mostly prototyping — Cursor or Vibe Mode alone serves that better
The Broader Context: Why This Approach Is Gaining Ground
Kiro isn't just a new tool — it's a bet on agentic development becoming the professional default. Gartner tracked a 1,445% surge in multi-agent system inquiries between Q1 2024 and Q2 2025.
I've written about where this is heading in Autonomous AI Agents and Agentic Workflows, and about vibe coding as a philosophy — both connect to what Kiro is building toward. The Google I/O 2026 announcements also showed how the broader industry is moving in this direction.
Amazon's logic is clear: they have the model infrastructure on Bedrock. Kiro is the developer-facing interface that routes that infrastructure directly into coding workflows. If agentic development becomes the professional default — and the trend lines point that way — Kiro is positioned ahead of most competitors.
Verdict
For AWS developers building complex features: worth it, with real evidence behind that claim.
For everyone else: no urgent reason to switch your full setup. But trying Spec Mode on one real feature you're planning to build — that 15-minute experiment will tell you more than any review, including this one.
Are you on Q Developer or have you already migrated? What's your experience with spec-driven development? Drop a comment — genuinely curious how different teams are handling this.
Awais is a developer and builder behind WebToolsHub — a growing collection of free browser-based tools for developers. No sign-up, no server-side data processing, just tools that work.
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