---
title: "Creates a new file entity by uploading data from a local machine. Uploaded files can, for example, be used for training or evaluating fine-tuned models."
method: POST
path: "/files"
tags: ["Files:"]
---

# Creates a new file entity by uploading data from a local machine. Uploaded files can, for example, be used for training or evaluating fine-tuned models.

`POST /files`

## Query parameters

- `api-version` string, required

## Response `201`

The file has been successfully created.

- File — A file is a document usable for training and validation. It can also be a service generated document with result details.
  - `object` 'list' | 'fine_tuning.job' | 'file' | 'fine_tuning.job.event' | 'fine_tuning.job.checkpoint' | 'model' | 'upload' | 'upload.part' | 'batch' | 'wandb' — Defines the type of an object.
  - `created_at` integer — A timestamp when this job or item was created (in unix epochs).
  - `id` string — The identity of this item.
  - `status` 'uploaded' | 'pending' | 'running' | 'processed' | 'error' | 'deleting' | 'deleted' — The state of a file.
  - `bytes` integer — The size of this file when available (can be null). File sizes larger than 2^53-1 are not supported to ensure compatibility with JavaScript integers.
  - `purpose` 'fine-tune' | 'fine-tune-results' | 'assistants' | 'assistants_output' | 'batch' | 'batch_output' | 'evals' | 'evals_output', required — The intended purpose of the uploaded documents. Use "fine-tune" for fine-tuning. This allows us to validate the format of the uploaded file.
  - `filename` string, required — The name of the file.
  - `expires_at` integer — A unix timestamp (the number of seconds that have elapsed since January 1, 1970) when the file is expired.
  - `status_details` string — The error message with details in case processing of this file failed. Deprecated.

## Other responses

- `default` — An error occurred.

---

[API](https://skmtc.net/azure/apis/cognitiveservices-azureopenai-authoring.md) · [All operations](https://skmtc.net/azure/apis/cognitiveservices-azureopenai-authoring/llms.txt) · [OpenAPI document](https://skmtc-service-staging.skmtc.workers.dev/v1/apis/azure/cognitiveservices-azureopenai-authoring/versions/b177dc430e39/schema)