# Windsurf vs Cline: which AI coding agent wins in 2026?

**Source:** https://promtable.com/compare/windsurf-vs-cline

> Windsurf wins on polished IDE UX, agentic Cascade mode, and managed model access. Cline wins on open-source self-host, plan-first transparency, and BYO model API. Pick Windsurf for managed AI-first IDE, Cline for open-source VS Code extension with full control.

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Windsurf wins on polished IDE UX, agentic Cascade mode, and managed model access. Cline wins on open-source self-host, plan-first transparency, and BYO model API. Pick Windsurf for managed AI-first IDE, Cline for open-source VS Code extension with full control.

## At a glance

| Dimension | Windsurf | Cline |
|---|---|---|
| Form factor | Standalone AI IDE (VS Code fork) | VS Code extension (open source) |
| Open source | No (closed) | **Yes (Apache 2.0)** ✓ |
| Model access | Bundled (Cascade tier) + BYO models | BYO (your API keys, OpenRouter / direct) |
| Agent mode | Cascade — managed agent loop | Plan / Act mode — step-by-step approval |
| Plan-first transparency | Shown after generation | **Required by default — see plan before execution** ✓ |
| MCP support | Yes (native) | Yes (native) |
| Codebase indexing | **Deep (RAG over repo)** ✓ | Mention-driven + manual files |
| Pricing | Tier subscription + Cascade credits | **Free OSS + your model API cost** ✓ |
| Best for | Polished AI-first IDE, deep codebase RAG, managed access | VS Code users, open source, BYO API, plan-first agents |

## Verdict

Windsurf is the right pick for a polished AI-first IDE — Cascade agent mode, deep codebase indexing, managed model access without juggling API keys. Cline is the right pick for VS Code users who want open-source transparency, full plan-first approval, and BYO API keys (cheaper at high volume). Many devs run Cline on a VS Code main IDE for daily work + try Windsurf for big agent refactors.

## When to pick which

- **Windsurf** — Polished AI IDE, Cascade agent, deep codebase RAG, managed access.
- **Cline** — Open source, VS Code extension, plan-first transparency, BYO API.

## FAQ

### Open-source between the two?

Cline — Apache 2.0; Windsurf is closed source.

### Cheaper at high volume?

Cline — BYO API key avoids the Cascade-tier markup.

### Most polished UX?

Windsurf — standalone IDE, Cascade is purpose-built.

## Related

- [/compare/cline-vs-cursor](https://promtable.com/compare/cline-vs-cursor)
- [/compare/windsurf-vs-cursor](https://promtable.com/compare/windsurf-vs-cursor)
- [/compare/cursor-vs-claude-code](https://promtable.com/compare/cursor-vs-claude-code)
- [/alternatives/cline](https://promtable.com/alternatives/cline)

*Last updated: 2026-06-01*
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Original page: https://promtable.com/compare/windsurf-vs-cline
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