Amazon Kiro
Amazon's spec-driven AI IDE (replaces Q Developer, EOL May 2026) that generates requirements docs and task breakdowns before writing any code.
Amazon Kiro replaces Amazon Q Developer (end-of-life May 15, 2026) with a fundamentally different approach to AI-assisted development. Rather than generate code from a prompt, Kiro's philosophy is spec-driven development: before writing any code, it generates EARS-notation requirements documents, design artifacts, and a prioritized task breakdown. Code generation happens only after the specification is agreed upon - studies cited by Amazon show this reduces downstream logic errors by 23–37% compared to prompt-first generation. Agent Hooks are Kiro's most distinctive feature: event-driven automations that trigger on specific development events - save a component and its unit tests auto-update, modify an API endpoint and the README refreshes. Kiro is a VS Code fork powered by Claude Sonnet and Amazon Nova models via AWS Bedrock, available at kiro.dev.
Key Features
- Spec-driven development - generates EARS requirements, design docs, and task breakdown before coding
- Agent Hooks - event-driven automations triggered by dev events (file save, API change, commit)
- Vibe mode - traditional prompt-to-code at $0.04/credit for quick tasks
- Spec mode - full requirements → design → tasks → code pipeline at $0.20/credit
- VS Code fork - full VS Code extension compatibility with no setup migration
- AWS Bedrock model routing: Claude Sonnet and Amazon Nova Pro models
- Free tier: 50 interactions per month with no credit card required
Use Cases
- AWS-native teams where spec-driven development reduces costly requirement-mismatch rework
- Enterprise environments requiring requirement traceability before code is written
- Teams replacing Amazon Q Developer after its May 2026 end-of-life
- Projects in regulated industries (healthcare, finance, government) where planning before coding is mandated
- Developers who want automated maintenance - tests, docs, and changelogs updating automatically via Hooks
Pros
- Agent Hooks are uniquely powerful - maintenance tasks run automatically without prompting
- Spec-driven approach produces more predictable, plannable output than pure prompt-first generation
- Free tier (50 interactions/month) allows full evaluation before committing to Pro pricing
Cons
- Spec mode at $0.20/credit is 5x the cost of vibe mode - complex projects become expensive quickly
- Less suited for rapid prototyping where spec overhead adds friction rather than value
- AWS Bedrock dependency makes it a poor fit for teams running on GCP or Azure
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