Detach a file from vector store will Detach the file from all vector stores

[yusufmsabeh]

Confirm this is a Node library issue and not an underlying OpenAI API issue

• This is an issue with the Node library

Describe the bug

I am encountering an unexpected behavior when trying to detach a file from a specific Vector Store using the Node SDK ("openai": "^4.96.2").

Observed Behavior:
When a file is attached to multiple Vector Stores (e.g., VS_A, VS_B, and VS_C), calling the delete function for a single Vector Store ID results in the file being detached from ALL of them.

Function Used:

const response = await openai().vectorStores.files.delete(
  "VS_A_ID", // Deleting the file from VS_A
  "file-xxx",
);

Result: The file "file-xxx" is successfully detached from VS_A, VS_B, and VS_C.

Expected: The file should only be detached from the Vector Store specified in the function call (VS_A_ID). It should remain attached to VS_B and VS_C.

Additional Context:
The underlying file object itself is not deleted from the main /v1/files endpoint, which is the correct behavior.

The issue is that the removal from one Vector Store seems to have a global effect on all attachments of that file.

This appears to be a bug, as deleting a specific vector_store_file object should be scope-limited to the provided vectorStoreId.

To Reproduce

1- upload a file to OpenAI
2- Use the file_id to attach the file to different vector stores
3- Detach a file from one vector store
The file will be detached from all vector stories

Code snippets

OS

windows 11

Node version

Node v22.19.0

Library version

openai 4.96.2