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OpenAI

OpenAI Chat API

Given a list of messages comprising a conversation, the model will return a response.

Documentation Provider Profile APIs.io OpenAPI GitHub

OpenAI Chat 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 Chat. The published artifact set on APIs.io includes an OpenAPI specification, API documentation, a JSON-LD context, and 2 JSON Schemas.

This API exposes 6 operations across 3 paths, and defines 21 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.

6 operations 3 paths 21 schemas 1 DELETE3 GET2 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
Contact
OpenAI Support
License
MIT
Terms of Service
View terms
Resource Areas
1

Authentication & Security 1

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

Paths & Operations 6

Across 3 paths, the API surfaces 6 operations — 1 DELETE, 3 GET, 2 POST. Each is listed below with its method, path, parameters, and response codes.

Chat 6

Given a list of messages comprising a conversation, the model will return a response.

POST
/chat/completions
OpenAI Creates a model response for the given chat conversation.
createChatCompletion body → 200
GET
/chat/completions
List stored Chat Completions. Only Chat Completions that have been stored with the store parameter set to true will be returned.
listChatCompletions 5 params → 200
GET
/chat/completions/{completion_id}
Get a stored chat completion. Only Chat Completions that have been created with the store parameter set to true will be returned.
getChatCompletion 1 param → 200
POST
/chat/completions/{completion_id}
Modify a stored chat completion. Only Chat Completions that have been created with the store parameter set to true can be modified. Currently, the only supported modification is to update the metadat…
updateChatCompletion 1 param body → 200
DELETE
/chat/completions/{completion_id}
Delete a stored chat completion. Only Chat Completions that have been created with the store parameter set to true can be deleted.
deleteChatCompletion 1 param → 200
GET
/chat/completions/{completion_id}/messages
Get the messages in a stored chat completion. Only Chat Completions that have been created with the store parameter set to true will be returned.
getChatCompletionMessages 4 params → 200

Schemas 21

The contract defines 21 schemas that model the data the API accepts and returns. The most detailed are CreateChatCompletionRequest (21 properties), CreateChatCompletionResponse_3 (8 properties), ChatCompletionResponseMessage (7 properties), CreateChatCompletionResponse (7 properties). Each schema is shown below with its type and property counts.

ChatCompletionRequestMessageContentPartImage
object
Learn about [image inputs](/docs/guides/vision).
2 properties 2 required
ChatCompletionMessageList
object
An object representing a list of chat completion messages.
5 properties 5 required
CreateChatCompletionResponse_3
object
Represents a chat completion response returned by model, based on the provided input.
8 properties 5 required
ChatCompletionRequestMessageContentPartText
object
Learn about [text inputs](/docs/guides/text-generation).
2 properties 2 required
CreateChatCompletionRequest
object
21 properties 2 required
ChatCompletionTokenLogprob
object
4 properties 4 required
ServiceTier
ToolCall
object
3 properties 3 required
ContentPart
object
3 properties 1 required
ChatCompletionMessage
object
5 properties 2 required
CreateChatCompletionResponse
object
Represents a chat completion response returned by model, based on the provided input.
7 properties 5 required
CompletionUsage_2
object
Usage statistics for the completion request.
5 properties 3 required
ChatCompletionResponseMessage
object
A chat completion message generated by the model.
7 properties 3 required
CompletionUsage
object
5 properties 3 required
ChatCompletionTool
object
2 properties 2 required
Metadata
ChatCompletionDeleted
object
3 properties 3 required
ChatCompletionMessageToolCall
object
A call to a function tool created by the model.
3 properties 3 required
ChatCompletionList
object
An object representing a list of Chat Completions.
5 properties 5 required
ChatCompletionMessageCustomToolCall
object
A call to a custom tool created by the model.
3 properties 3 required
ChatCompletionMessageToolCalls
array
The tool calls generated by the model, such as function calls.

Specification

The full machine-readable OpenAPI contract behind this narrative.

Source

openai-chat-api-openapi.yml Raw ↑

Other APIs OpenAI publishes across the network.

OpenAI Responses API
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OpenAI Batch API
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OpenAI Vector Stores API
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OpenAI Uploads API
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OpenAI Realtime API
AE Profile APIs.io
OpenAI Evals API
AE Profile APIs.io
OpenAI Videos API
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OpenAI Conversations API
AE Profile APIs.io
OpenAI Containers API
AE Profile APIs.io
OpenAI ChatKit API
AE Profile APIs.io
OpenAI Skills API
AE Profile APIs.io
#Chat
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API Details
ID
openai:openai-chat-api
Base URL
https://api.openai.com
Docs
https://platform.openai.com/docs/assistants/overview
Provider
OpenAI
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