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OpenAI Uploads API

Use Uploads to upload large files in multiple parts.

OpenAI Uploads API is one of 51 APIs that OpenAI publishes on the APIs.io network, described by a machine-readable OpenAPI specification.

This API exposes 2 JSON Schema definitions.

Tagged areas include Uploads. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a JSON-LD context, and 2 JSON Schemas.

This API exposes 4 operations across 4 paths, and defines 7 schemas. It is described by OpenAPI 3.0.0, at version 2.0.0.

Requests are made against a single base URL, https://api.openai.com/v1.

4 operations 4 paths 7 schemas 4 POST

Metadata

The identity and technical contract details declared by the specification.

Specification
OpenAPI 3.0.0
API Version
2.0.0
Base URL
https://api.openai.com
Authentication
HTTP Bearer
License
Terms of Service
Resource Areas
1

Authentication & Security 1

OpenAI Uploads API declares 1 security scheme for authenticating requests. It accepts HTTP bearer tokens (ApiKeyAuth). By default, every request must be authenticated.

Paths & Operations 4

Across 4 paths, the API surfaces 4 operations — 4 POST. Each is listed below with its method, path, parameters, and response codes.

Uploads 4

Use Uploads to upload large files in multiple parts.

POST
/uploads
Creates an intermediate [Upload](/docs/api-reference/uploads/object) object that you can add [Parts](/docs/api-reference/uploads/part-object) to. Currently, an Upload can accept at most 8 GB in total…
createUpload body → 200
POST
/uploads/{upload_id}/cancel
Cancels the Upload. No Parts may be added after an Upload is cancelled. Returns the Upload object with status cancelled.
cancelUpload 1 param → 200
POST
/uploads/{upload_id}/complete
Completes the [Upload](/docs/api-reference/uploads/object). Within the returned Upload object, there is a nested [File](/docs/api-reference/files/object) object that is ready to use in the rest of th…
completeUpload 1 param body → 200
POST
/uploads/{upload_id}/parts
Adds a [Part](/docs/api-reference/uploads/part-object) to an [Upload](/docs/api-reference/uploads/object) object. A Part represents a chunk of bytes from the file you are trying to upload. Each Part…
addUploadPart 1 param body → 200

Schemas 7

The contract defines 7 schemas that model the data the API accepts and returns. The most detailed are OpenAIFile (9 properties), Upload (9 properties), CreateUploadRequest (5 properties), UploadPart (4 properties). Each schema is shown below with its type and property counts.

FileExpirationAfter
object
The expiration policy for a file. By default, files with purpose=batch expire after 30 days and all other files are persisted until they are manually deleted.
2 properties 2 required
UploadPart
object
The upload Part represents a chunk of bytes we can add to an Upload object.
4 properties 4 required
AddUploadPartRequest
object
1 property 1 required
CompleteUploadRequest
object
2 properties 1 required
Upload
object
The Upload object can accept byte chunks in the form of Parts.
9 properties 7 required
CreateUploadRequest
object
5 properties 4 required
OpenAIFile
object
The File object represents a document that has been uploaded to OpenAI.
9 properties 7 required

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

openai-uploads-api-openapi.yml Raw ↑

Other APIs OpenAI publishes across the network.

OpenAI Responses API
OpenAI Moderations API
OpenAI Batch API
OpenAI Vector Stores API
OpenAI Realtime API
OpenAI Evals API
OpenAI Videos API
OpenAI Conversations API
OpenAI Containers API
OpenAI ChatKit API
OpenAI Skills API
OpenAI Agents SDK
Where this information came from

This is an independent, third-party profile of OpenAI Uploads API, published by API Evangelist. We do not operate, host, resell, or support these APIs, and we are not affiliated with or endorsed by the company unless stated above. Everything here is built from publicly available information — the company's own site, developer portal, documentation, public repositories, and the specifications it publishes for public use. Nothing is obtained by breaching a system, defeating an access control, or using credentials.

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