API ReferenceUploadsCopy MarkdownPartsUse Uploads to upload large files in multiple parts. Add upload partPOST/uploads/{upload_id}/partsModelsExpand Collapse UploadPart object { id, created_at, object, upload_id } The upload Part represents a chunk of bytes we can add to an Upload object. id: stringThe upload Part unique identifier, which can be referenced in API endpoints. created_at: numberThe Unix timestamp (in seconds) for when the Part was created. formatunixtimeobject: "upload.part"The object type, which is always upload.part. upload_id: stringThe ID of the Upload object that this Part was added to.