OpenCode

Configure OpenCode with Prism as an OpenAI-compatible provider.

Copy for your agent

Follow https://docs.prisminference.com/guides/opencode to configure Prism in my
global OpenCode settings. Preserve unrelated settings and never repeat my API
key to me or include it in your response.

If no key exists, ask the workspace owner for an existing PRISM_API_KEY.

Configure

Merge this into ~/.config/opencode/opencode.json:

{
  "$schema": "https://opencode.ai/config.json",
  "model": "prism/deepseek-v4.1-flash",
  "small_model": "prism/deepseek-v4.1-flash",
  "provider": {
    "prism": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "Prism",
      "options": {
        "baseURL": "https://api.prisminference.com/v1"
      },
      "models": {
        "deepseek-v4.1-flash": {
          "name": "DeepSeek-V4.1-Flash",
          "attachment": true,
          "reasoning": true,
          "tool_call": true,
          "modalities": {
            "input": ["text", "image"],
            "output": ["text"]
          }
        },
        "gemma-4-31b": {
          "name": "Gemma 4 31B",
          "attachment": true,
          "reasoning": true,
          "tool_call": true,
          "modalities": {
            "input": ["text", "image"],
            "output": ["text"]
          }
        }
      }
    }
  }
}

OpenCode adds the first prism/ as its local provider ID and sends the bare model ID to Prism.

Connect

Start OpenCode and run /connect. Select Other, enter prism as the provider ID, then enter your Prism API key. OpenCode stores the credential in its native auth store.

Do not inspect the auth store or run opencode debug config, which can print resolved secrets.

Verify

opencode models prism