Add upload part

POST

/uploads/{upload_id}/parts

Adds a Part to an Upload object. A Part represents a chunk of bytes from the file you are trying to upload.

Each Part can be at most 64 MB, and you can add Parts until you hit the Upload maximum of 8 GB.

It is possible to add multiple Parts in parallel. You can decide the intended order of the Parts when you complete the Upload.

Request

Authorization

Bearer Token

Provide your bearer token in the

Authorization

header when making requests to protected resources.

Example:

Authorization: Bearer ********************

Path Params

Body Params multipart/form-data

🟢200Success

application/json

Body

Request Example

Shell

JavaScript

Java

Swift

curl --location --request POST 'https://api.openai.com/v1/uploads//parts' \
--header 'Authorization: Bearer <token>' \
--form 'data=@""'

Response Example

{
  "id": "part_def456",
  "object": "upload.part",
  "created_at": 1719185911,
  "upload_id": "upload_abc123"
}

Modified at 2025-09-17 10:20:28