Node SDK uploadAndPoll does not propagate chunking strategy to created files

API
,
1

Trying to upload multiple files directoy to a vector store with the node sdk, every time the resulting files have the default chunking strategy.

With the following snippet:

    await req.openai.beta.vectorStores.fileBatches.uploadAndPoll(vectorStore.id, { files }, {
      chunking_strategy: {
        type: "static",
        static: {
          max_chunk_size_tokens: 400,
          chunk_overlap_tokens: 100,
        },
      },
    });

The resulting file inside the vector store has the default:

  {
    "id": "file-KqHZhS24e7aOiMWQGZwbzC78",
    "object": "vector_store.file",
    "usage_bytes": 122690,
    "created_at": 1727178334,
    "vector_store_id": "vs_Nlzu6Hy5z9vO28hHGBdykbQX",
    "status": "completed",
    "last_error": null,
    "chunking_strategy": {
      "type": "static",
      "static": {
        "max_chunk_size_tokens": 800,
        "chunk_overlap_tokens": 400
      }
    }
  }