> ## Documentation Index > Fetch the complete documentation index at: https://openrouter.ai/docs/llms.txt > Use this file to discover all available pages before exploring further. # Unit ## Example Usage ```go theme={null} import ( "github.com/OpenRouterTeam/go-sdk/models/components" ) value := components.UnitRequest // Open enum: custom values can be created with a direct type cast custom := components.Unit("custom_value") ``` ## Values | Name | Value | | --------------- | --------- | | `UnitRequest` | request | | `UnitImage` | image | | `UnitMegapixel` | megapixel | | `UnitToken` | token |