Zed.

Zed accepts OpenAI-compatible providers both for the assistant and for the predictions it makes as you type.

Configuration

Open ~/.config/zed/settings.json and add:

{
  "language_models": {
    "openai": {
      "api_url": "https://api.nan.builders/v1",
      "available_models": [
        {
          "name": "glm5.3-flash",
          "display_name": "NaN GLM 5.3 Flash",
          "max_tokens": 1000000
        },
        {
          "name": "deepseek-v4-flash",
          "display_name": "NaN DeepSeek V4 Flash",
          "max_tokens": 1000000
        }
      ]
    }
  },
  "edit_predictions": {
    "open_ai_compatible_api": {
      "api_url": "https://api.nan.builders/v1",
      "model": "qwen3.8-flash"
    }
  }
}

name is the id that travels in the request and has to be spelled exactly. display_name is only what you will see in the picker, so call it whatever you like.

The key

Zed does not keep the key in settings.json. It asks you for it through the interface: open the assistant panel, go into the OpenAI provider settings and paste your NaN key there.

Check that it works

Open the assistant panel, pick one of the models you declared and ask it anything.

Recommended model

glm5.3-flash for the assistant. For inline predictions, qwen3.8-flash: what matters there is latency, because the result has to appear while you type.