Cline vs Windsurf

Option A

Cline

Cline is an open-source autonomous coding agent for VS Code and CLI that uses a Plan-and-Act loop to read, edit, execute terminal commands, and build software with your own API keys.

Best for

• Developers wanting an open-source VS Code agent
• Teams using custom model endpoints or BYOK
• End-to-end task automation inside editors

Strengths

• Fully open-source with no vendor lock-in
• Transparent cost control with pay-per-token models
• Deep integration with VS Code

Trade-offs

• Requires managing your own API keys
• Token costs can accumulate on complex agent loops

Verdict

Cline provides an open-source, non-locked alternative to dedicated AI editors like Cursor and Windsurf. Alongside terminal tools like Claude Code and Aider, Cline is the premier in-editor agent for developers who want complete control over model choice and cost.

Option B

Windsurf

Agent-first IDE to trial on the same messy ticket as Cursor — keep the mergeable PR.

Best for

• Teams comparing agent IDEs on a real ticket
• Outcome-shaped agent work
• People leaving autocomplete-only

Strengths

• Fair Cursor comparison
• Built for agents, not as a plugin afterthought

Trade-offs

• Moving controls
• Docs lag launches

Verdict

Windsurf is the other agent IDE. Cursor is the default comparison. Copilot is procurement gravity. Claude Code is the terminal. Run one ticket in both IDEs this week. Keep the mergeable PR. Re-read this quarter’s security page before you standardize. Do not pick from Twitter recaps. Run one messy ticket in Windsurf and Cursor. Keep the PR. Re-read this quarter's security page. Do not pick from recaps. Copilot if procurement already decided. If procurement already decided GitHub, Copilot is the cheaper fight.