Description

When a model config uses id to map to a variant, and that id doesn't exist in models.dev but the config key does, cost/limit/capability data is not inherited

Plugins

No response

OpenCode version

1.2.9

Steps to reproduce

1. In your provider config, add a model entry like:

"base-model-key": {
  "id": "custom-variant-id"
}

wwhere "base-model-key" exists in models.dev but "custom-variant-id" does not.
2. Use this model in a request.

Screenshot and/or share link

{
  "$schema": "https://opencode.ai/config.json",
  "enabled_providers": [
    "amazon-bedrock"
  ],
  "provider": {
    "amazon-bedrock": {
      "models": {
        "anthropic.claude-sonnet-4-5-20250929-v1:0": {
          "id": "us-gov.anthropic.claude-sonnet-4-5-20250929-v1:0",
          "name": "Claude Sonnet 4.5 GovCloud",
        }
      }
    }
  }
}

Operating System

macOS 26.3

Terminal

Ghostty