Bolt.new vs Kiro
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Bolt.new if you want prompt, edit, and deploy full-stack web apps in the browser (Supervised agent, freemium); choose Kiro if you want aws's spec-driven agentic ide for structured software engineering (Supervised agent, freemium).
| Bolt.new | Kiro | |
|---|---|---|
| What it is | Prompt, edit, and deploy full-stack web apps in the browser | AWS's spec-driven agentic IDE for structured software engineering |
| Type | agent | product-with-agents |
| Autonomy | Supervised agent | Supervised agent |
| Pricing | freemium · Free (1M tokens/mo); Pro from $25/mo | freemium · $0 (Free, 50 credits); Pro $20/mo |
| Best for | consumers, developers, smb | developers, mid-market, enterprise |
| Deployment | saas | saas, api |
| Modalities | text, code | text, code |
| Models | claude, model-agnostic | claude, open-source, model-agnostic |
| Protocols | rest-api | mcp, function-calling |
| Integrations | Netlify, Supabase, GitHub, Expo | Amazon Bedrock, AWS IAM Identity Center, MCP servers, Amazon Q Developer (migration) |
| Capabilities | 3 documented | 4 documented |
Bolt.new
- +Full dev environment runs in the browser via WebContainers, with the AI controlling filesystem, terminal, and server
- +Generates true full-stack apps (not just UI) and can deploy via Bolt Cloud
- +No local setup; fast for prototyping and iterating by chatting
- -Token-based usage cost can rise quickly on complex or long-running builds
- -Output needs human review and iteration; it is not a hands-off autonomous engineer
Kiro
- +Spec-first workflow makes AI output more reviewable, auditable, and team-ownable than free-form prompting
- +Model-flexible via Amazon Bedrock (Claude, DeepSeek, MiniMax, open-weight) with task-based routing
- +Backed by AWS with enterprise auth (SAML/SCIM SSO) and a migration path from Amazon Q Developer
- -Credit-based usage can get expensive and unpredictable at scale, and unused credits do not roll over
- -The requirements/design/tasks process adds overhead versus lightweight assistants for quick edits
Which should you choose?
Bolt.new is prompt, edit, and deploy full-stack web apps in the browser, best for consumers, developers, smb. Kiro is aws's spec-driven agentic ide for structured software engineering, best for developers, mid-market, enterprise. The right choice depends on the autonomy level you want, your existing integrations, and your budget, all compared above.