> ## 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. # Result ## Fields | Field | Type | Required | Description | | - | - | - | - | | `custom_id` | *str* | ✔️ | N/A | | `error` | [Nullable\[components.ResultError\]](../components/resulterror.mdx) | ✔️ | N/A | | `id` | *str* | ✔️ | N/A | | `response` | [Nullable\[components.BatchObjectResponse\]](../components/batchobjectresponse.mdx) | ✔️ | N/A |