> ## 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. # ImagePricingEntry One billable pricing line for an image provider. ## Example Usage ```typescript theme={null} import { ImagePricingEntry } from "@openrouter/sdk/models"; let value: ImagePricingEntry = { billable: "output_image", costUsd: 0.05, unit: "image", }; ``` ## Fields | Field | Type | Required | Description | | ---------- | ----------------------------------------- | -------------------- | ----------- | | `billable` | [models.Billable](../models/billable.mdx) | :heavy\_check\_mark: | N/A | | `costUsd` | *number* | :heavy\_check\_mark: | N/A | | `unit` | [models.Unit](../models/unit.mdx) | :heavy\_check\_mark: | N/A | | `variant` | *string* | :heavy\_minus\_sign: | N/A |