Use Any AI Model in Cursor, Cline, and Windsurf with One API Key

Use Any AI Model in Cursor, Cline, and Windsurf with One API Key AI coding assistants lock you into their default models. Cursor uses GPT-4 and Claude. Cline defaults to Claude. Windsurf has its own model selection. If you want to try DeepSeek for cheap iterations or Gemini for long-context tasks, you're out of luck with the built-in options. An OpenAI-compatible API aggregator solves this. One API key, one base URL, and you get access to every model through the same interface your IDE already supports. Here's how to set it up in each tool. Cursor Cursor has native support for custom OpenAI-compatible endpoints. Setup Open Cursor Settings (Cmd+, on Mac, Ctrl+, on Windows) Navigate to Models → OpenAI API Key Enter your configuration: API Key: sk-lemon-xxx Base URL: https://api.lemondata.cc/v1 In the model dropdown, you can now type any model name: gpt-4.1 , claude-sonnet-4-6 , deepseek-chat , gemini-2.5-pro Recommended Model Configuration Task Model Why Tab completion gpt-4.1-mini Fast,