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Connect LM Studio ​

LM Studio lets you download an AI model and make it available to Definer through its local server. The setup has 3 parts: download a model, start the server, and choose the loaded model in the AI Source.

Install LM Studio ​

Step 1: Download LM Studio ​

  1. Visit lmstudio.ai in your web browser
  2. Click the download button for your operating system (Windows, macOS, or Linux)
  3. Follow the standard installation process for your platform

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Step 2: Explore the interface ​

After installation, open LM Studio to explore its clean, organized interface with four main navigation tabs:

  • Chat - Interact directly with models through a conversational interface
  • Developer - Configure and manage the local API server
  • My Models - Access and organize your downloaded model library
  • Discover - Browse and download new models from the model hub

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Step 3: Download a model ​

  1. Navigate to the Discover tab
  2. Browse available models (you can filter by size, capability, or popularity)
  3. Click on a model card to view details and performance metrics
  4. Click the download button on your chosen model
  5. Wait for download to complete (larger models may take several minutes)

lm-studio-download-model.gif

Step 4: Start the local server ​

  1. Switch to the Developer tab in the left sidebar
  2. Toggle server switch to "Running"
  3. Confirm the server is active (status will change to "Running" with a green indicator)
  4. Note the server address (default: http://localhost:1234)

lm-studio-starting-server.gif

Connect LM Studio to Definer ​

Follow these simple steps to connect your local LM Studio models to Definer:

  1. Right-click Definer icon next to address bar
  2. Select "Definer Options".
  3. Go to "Sources" page and find the "AI" source in the list.
  4. Click on "Settings".
  5. In "Provider" field, choose "LM Studio".
  6. Under Model, choose the model currently loaded by the LM Studio server.
  7. Enter a representative question in Preview and confirm that the model responds.

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The AI Source now uses the selected LM Studio model for prompts that inherit its Main settings.

Fix a problem ​

  • Model Not Responding: Ensure your selected model is fully loaded in LM Studio
  • Connection Errors: Verify server is running and port isn't blocked
  • Out of Memory Errors: Close other resource-intensive applications or switch to a smaller model

If you need help, feel free to create a new post with the "Help" flair in the r/lumetrium_definer subreddit.