Kiro vs Windsurf
A side-by-side comparison of capabilities, autonomy, integrations, and pricing to help you choose.
Short answer: choose Kiro if you want aws's spec-driven agentic ide for structured software engineering (Supervised agent, freemium); choose Windsurf if you want agentic ai ide whose cascade agent edits across your codebase (Supervised agent, freemium).
| Kiro | Windsurf | |
|---|---|---|
| What it is | AWS's spec-driven agentic IDE for structured software engineering | Agentic AI IDE whose Cascade agent edits across your codebase |
| Type | product-with-agents | agent |
| Autonomy | Supervised agent | Supervised agent |
| Pricing | freemium · $0 (Free, 50 credits); Pro $20/mo | freemium · Free tier; Pro $20/mo |
| Best for | developers, mid-market, enterprise | developers, mid-market, enterprise |
| Deployment | saas, api | saas |
| Modalities | text, code | text, code |
| Models | claude, open-source, model-agnostic | claude, proprietary, model-agnostic |
| Protocols | mcp, function-calling | mcp, function-calling |
| Integrations | Amazon Bedrock, AWS IAM Identity Center, MCP servers, Amazon Q Developer (migration) | GitHub, MCP servers, VS Code extensions ecosystem, Devin |
| Capabilities | 4 documented | 3 documented |
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
Windsurf
- +Cascade does genuine multi-step, multi-file agentic work inside a familiar VS Code-style editor
- +Ships a fast in-house coding model (SWE-1.5) and can also run frontier models like Claude
- +After the Cognition acquisition, integrates Devin as a cloud agent for delegated tasks
- -Quota and credit changes after the acquisition have shifted what each tier includes
- -Multi-step agent runs still need human review; not a hands-off autonomous engineer
Which should you choose?
Kiro is aws's spec-driven agentic ide for structured software engineering, best for developers, mid-market, enterprise. Windsurf is agentic ai ide whose cascade agent edits across your codebase, 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.
This comparison is generated from the sourced Kiro and Windsurf profiles. Open either profile to review its evidence and last-reviewed date.