Using Corion AI with OpenCode

Integrate Corion models from api.corion.ai into OpenCode as a custom provider.

1. Prerequisites

• OpenCode installed and runnable
• A Corion API key from your dashboard
• The exact model IDs on your account — Corion currently exposes kimi-k3, deepseek-v4-pro-0813 and deepseek-v4-flash-0731

2. Get your API key

Sign in at corion.ai, open Dashboard → API keys, and copy a key. Keep it private — Corion shows the complete key only once at creation.

3. Configure OpenCode

Create or edit ~/.config/opencode/opencode.json (global) or opencode.json in your project (project-scoped):

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "corion": {
      "npm": "@ai-sdk/openai-compatible",
      "name": "Corion AI",
      "options": {
        "baseURL": "https://api.corion.ai/v1",
        "apiKey": "{env:CORION_API_KEY}"
      },
      "models": {
        "kimi-k3": {
          "name": "Kimi K3",
          "reasoning": true,
          "tool_call": true,
          "attachment": true,
          "interleaved": { "field": "reasoning_content" },
          "limit": { "context": 1048576, "output": 131072 }
        },
        "deepseek-v4-pro-0813": {
          "name": "DeepSeek V4 Pro 0813",
          "reasoning": true,
          "tool_call": true,
          "attachment": false,
          "interleaved": { "field": "reasoning_content" },
          "limit": { "context": 1048576, "output": 384000 }
        },
        "deepseek-v4-flash-0731": {
          "name": "DeepSeek V4 Flash 0731",
          "reasoning": true,
          "tool_call": true,
          "attachment": false,
          "interleaved": { "field": "reasoning_content" },
          "limit": { "context": 1048576, "output": 65536 }
        }
      }
    }
  }
}

Notes:

• npm: "@ai-sdk/openai-compatible" is the right package — Corion speaks /v1/chat/completions.
• Every Corion model streams reasoning in reasoning_content, so interleaved.field is set explicitly (OpenCode's Poolside example uses the same field name).
• limit feeds OpenCode's context-left indicator. Add one entry per model you want to use; model IDs must match GET /v1/models exactly.

4. Store your API key

Keep the key out of the config file. Set an environment variable, then restart your terminal:

• PowerShell: setx CORION_API_KEY "your-key-here"
• cmd: setx CORION_API_KEY "your-key-here"
• macOS / Linux: echo 'export CORION_API_KEY="your-key-here"' >> ~/.bashrc && source ~/.bashrc

Confirm the key can list the models before you start OpenCode:

curl https://api.corion.ai/v1/models -H "Authorization: Bearer your-key-here"

5. Restart and use

Quit and restart OpenCode — config is only read at startup. Then run:

/models

Select corion/kimi-k3, corion/deepseek-v4-pro-0813 or corion/deepseek-v4-flash-0731. To set a default in config, add a top-level key:

{
  "model": "corion/kimi-k3"
}

First task after setup should be read-only — for example "summarize this directory" — so you can confirm responses and tool calls before allowing edits.

Troubleshooting

• Provider not listed under /models — the config file wasn't reloaded; fully quit and relaunch OpenCode.
• 401 Unauthorized — the env var is missing or the key is incomplete. Run opencode auth list to confirm the credential is picked up, or re-set the variable and restart your shell.
• Model ID rejected — check the ID matches exactly; Corion's IDs have no vendor prefix (kimi-k3, not moonshot/kimi-k3).

For other request errors, see errors and retries.

Sources: OpenCode providers — custom provider