Cost is always displayed as zero ($0.00) for custom models that extend built-in ones #4162

{
  "$schema": "https://opencode.ai/config.json",
  "provider": {
    "opencode": {
      "models": {
        "gpt-5-high": {
          "id": "gpt-5",
          "options": {
            "reasoningEffort": "high",
            "textVerbosity": "low",
            "reasoningSummary": "auto",
          },
        },
        "gpt-5-low": {
          "id": "gpt-5",
          "options": {
            "reasoningEffort": "low",
            "textVerbosity": "low",
            "reasoningSummary": "auto",
          },
        },
      },
    },
  },
}