Models

opencode uses the AI SDK and Models.dev to support for 75+ LLM providers and it supports running local models.

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Providers

You can configure providers in your opencode config under the provider section.

Defaults

Most popular providers are preloaded by default. If you’ve added the credentials for a provider through opencode auth login, they’ll be available when you start opencode.

Custom

You can add custom providers by specifying the npm package for the provider and the models you want to use.

opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "openrouter": {
      "npm": "@openrouter/ai-sdk-provider",
      "name": "OpenRouter",
      "options": {},
      "models": {
        "anthropic/claude-3.5-sonnet": {
          "name": "Claude 3.5 Sonnet"
        }
      }
    }
  }
}

Local

To configure a local model, specify the npm package to use and the baseURL.

opencode.json

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "ollama": {
      "npm": "@ai-sdk/openai-compatible",
      "options": {
        "baseURL": "http://localhost:11434/v1"
      },
      "models": {
        "llama2": {}
      }
    }
  }
}

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Select a model

If you have multiple models, you can select the model you want by typing in:

/models

---

Loading models

When opencode starts up, it checks for the following:

1. The model list in the opencode config.

   opencode.json

   {
     "$schema": "https://opencode.ai/config.json",
     "model": "anthropic/claude-sonnet-4-20250514"
   }

   The format here is provider/model.

2. The last used model.

3. The first model using an internal priority.