Use Mistral in OpenCode

Steps

1. 1
   Step 1.

   Run /connect, scroll down to Other, enter a unique provider id (the docs say you will reuse it in your config file), then paste your Mistral API key.

   Terminal

   Copy

   $ /connect
   
   ┌  Add credential
   │
   ◆  Select provider
   │  ...
   │  ● Other
   └

2. 2
   Step 2.

   Create or update opencode.json in your project directory. This is the docs' custom-provider template with Mistral's documented base URL and model ids filled in. The provider id must match the one you entered in /connect.

   JSON

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   {
     "$schema": "https://opencode.ai/config.json",
     "provider": {
       "mistral-api": {
         "npm": "@ai-sdk/openai-compatible",
         "name": "Mistral",
         "options": {
           "baseURL": "https://api.mistral.ai/v1"
         },
         "models": {
           "mistral-medium-latest": {
             "name": "Mistral Medium 3.5"
           },
           "codestral-latest": {
             "name": "Codestral"
           }
         }
       }
     }
   }

3. 3
   Step 3.

   Optionally load the key from an environment variable instead of /connect, using the docs' {env:...} syntax for options.apiKey.

   JSON

   Copy

   "apiKey": "{env:MISTRAL_API_KEY}"

4. 4
   Step 4.

   Run /models. Your custom provider and its models appear in the selection list.

   Snippet

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   /models