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Cursor is Anysphere’s AI-first IDE forked from VS Code, with built-in agents and codebase understanding.

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Install Cursor

  1. Download and install Cursor from the Cursor website.
  2. Open Cursor, click Log In, and sign in to your Cursor account.
Cursor login screen

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Configure MiniMax API

Important: Clear OpenAI Environment Variables Before ConfigurationBefore configuring, ensure you clear the following OpenAI-related environment variables to avoid conflicts with MiniMax API:
  • OPENAI_API_KEY
  • OPENAI_BASE_URL
Note: Custom models require a Cursor Pro subscription or above.Without Cursor Pro, configuration will result in the following error:The model MiniMax-M3.1-Flash-Preview does not work with your current plan or api key
Known issue: “Override OpenAI Base URL” is a global settingOnce enabled, the override applies to all API Keys you’ve configured in Cursor — including Anthropic / GPT keys for Cursor’s built-in models. This is acknowledged by Cursor staff: when you set a base URL, all your API Keys see it (forum thread).If your Cursor-native Claude / GPT models stop working after enabling Override, turn it off when you’re not using MiniMax. Cursor currently does not support per-model base URLs (open feature request).
  1. Click “Models” in the left sidebar to open the model configuration page.
  2. Expand the “API Keys” section and configure the API information:
    • Enable “Override OpenAI Base URL”;
    • Enter the MiniMax base URL https://api.minimax.io/v1
  3. Paste your Subscription Key into the OpenAI API Key field.
  4. Turn on Use OpenAI API Key.
OpenAI API Key and Base URL in Cursor's Models settings The screenshot shows the Mainland China endpoint. For this page, enter https://api.minimax.io/v1 as specified above.
  1. Click Enable OpenAI API Key in the confirmation dialog.
Confirm enabling the OpenAI API Key in Cursor
  1. At the bottom of the model list in Models, click Add Custom Model.
Add Custom Model at the bottom of Cursor's model list
  1. Enter the model name “MiniMax-M3.1-Flash-Preview”, then click the “Add” button.
Use the exact model name MiniMax-M3.1-Flash-Preview (capital M’s, lowercase i, hyphen) — match the spelling shown in MiniMax docs.
  1. Enable the newly added “MiniMax-M3.1-Flash-Preview” model.
  2. Select the “MiniMax-M3.1-Flash-Preview” model in the chat panel and start using “MiniMax-M3.1-Flash-Preview” for development.
Cursor Tab autocomplete is not powered by your custom MiniMax key. Tab is a Cursor Pro feature that always uses Cursor’s own model. Custom models only work in Chat / Composer / Edit modes.
If the model returns no content, open Browser & Network in Cursor settings and try HTTP/1.0 under HTTP Compatibility Mode.
Cursor HTTP Compatibility Mode settings