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Zed is a high-performance code editor with built-in AI features. Connect it to Lightweight by editing your settings.json.

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Setup

Open your Zed settings file and add the Lightweight configuration to the language_models block: File: ~/.config/zed/settings.json (Linux) or ~/Library/Application Support/Zed/settings.json (macOS) 
{
  "language_models": {
    "openai": {
      "api_url": "https://api.lightweight.one/v1",
      "api_key": "lw_sk_your-key-here",
      "available_models": [
        {
          "name": "claude-opus-4.6",
          "display_name": "Claude Opus 4.6",
          "max_tokens": 200000
        },
        {
          "name": "claude-sonnet-4.5",
          "display_name": "Claude Sonnet 4.5",
          "max_tokens": 200000
        },
        {
          "name": "gpt-5.4",
          "display_name": "GPT-5.4",
          "max_tokens": 128000
        },
        {
          "name": "gemini-2.5-pro",
          "display_name": "Gemini 2.5 Pro",
          "max_tokens": 1000000
        }
      ]
    }
  }
}
Add any model from the catalog to the available_models array. The name field must match the exact model ID.
After saving the settings, restart Zed. Your Lightweight models will appear in the AI model selector.