Use OpenCode with Yolo-Auto's LLM API.

Add Yolo-Auto as an OpenAI-compatible provider in OpenCode, keep the API key in an environment variable, and run Qwen with free or flat-rate access.

Who OpenCode LLM API Setup is actually for

OpenCode LLM API Setup is best for developers and power users who want model access inside tools, agents, scripts, and apps, not just a closed consumer chatbot tab.

• Developers adding a custom OpenCode model provider.
• Coding-agent users who want free testing before choosing a paid backend.
• OpenCode workflows that benefit from predictable flat-rate LLM pricing.

Keep OpenCode, change the model provider

OpenCode supports custom providers through an OpenAI-compatible adapter. Yolo-Auto supplies the endpoint, API key, and public Qwen model while OpenCode keeps handling the coding-agent workflow.

The integration starts on the free tier. If longer coding sessions make token volume difficult to predict, the same provider config works with a flat-rate paid plan.

Add Yolo-Auto to opencode.json

Set the API key in your environment, then add the provider block below. The config uses OpenCode's OpenAI-compatible provider package and the free-compatible Yolo-Auto model.

These examples use qwen3.8-flash, our recommended model for text, images, and tools on Free and paid plans. Paid users can optionally choose yolo, a configurable route initially backed by Flash. Its server-side target can change while your client model ID stays the same.

export YOLO_AUTO_API_KEY="yolo_YOUR_KEY"

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "yolo-auto": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "Yolo-Auto",
      "options": {
        "baseURL": "https://yolo-auto.com/v1",
        "apiKey": "{env:YOLO_AUTO_API_KEY}"
      },
      "models": {
        "qwen3.8-flash": {
          "name": "qwen3.8-flash",
          "limit": {
            "context": 131072,
            "output": 32768
          },
          "attachment": true,
          "modalities": {
            "input": [
              "text",
              "image"
            ],
            "output": [
              "text"
            ]
          }
        }
      }
    }
  }
}

Do not commit the API key. OpenCode reads it from YOLO_AUTO_API_KEY.

When to choose Yolo-Auto