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클라인 (Cline)

Free open-source AI coding agent for VS Code

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What is 클라인 (Cline)?

Cline is an open-source AI coding agent for VS Code and CLI that reads files, writes code and runs commands to help you build. The tool itself is free and you bring your own AI model (Claude, GPT, Gemini), paying only for inference — a fit for developers who dislike vendor lock-in.

Editor's note: A leading open-source coding agent you can run without a subscription.

How to start in 5 minutes

  1. Install the Cline extension in VS Code.
  2. Add the API key for the AI model you want to use.
  3. Describe what you want in plain language and the agent writes and runs code.
  4. Connect external tools via MCP if needed.

Pricing

PlanPriceWhat you get
Open SourceFree
  • VS Code extension and CLI
  • Bring your own key or at-cost inference
  • MCP Marketplace
  • No subscription or lock-in

The tool is free and open source; you pay only for AI inference on a usage basis or bring your own API key. · Exchange rate applied: 1 USD ≈ 1490 KRW. Prices can change — check the official site.

Alternatives & similar tools

ClaudeAn AI chatbot that's great at summarizing long documents and careful writingCursorA code editor where AI writes code alongside youGitHub CopilotAn AI that autocompletes your code as you writev0A tool that turns your description into web UI codeReplitA development environment where you code in the browser with AI helpn8nAn open-source automation tool you can self-host and use freely