OpenAI APIs website screenshot

OpenAI APIs

Collection of OpenAI's artificial intelligence APIs for natural language processing, image generation, speech, and embeddings including Chat Completions, Completions, Images, Audio, Embeddings, Moderations, and Assistants APIs.

OpenAI APIs publishes 12 APIs on the APIs.io network, including Assistants API, Chat API, Completions API, and 9 more. Tagged areas include Artificial Intelligence, Embeddings, Image-Generation, Language Models, and Speech.

The OpenAI APIs catalog on APIs.io includes 1 JSON-LD context and 1 Spectral governance ruleset.

OpenAI APIs’ developer surface includes authentication, pricing, engineering blog, and 11 more developer resources.

🌐 Visit website 📡 Source on GitHub
43.5/100 developing ▬ flat Agent 22/100 agent aware saas Full breakdown ↓
scored 2026-09-08 · rubric v0.20.0
AccessPaid
7 APIs
Artificial IntelligenceEmbeddingsImage-GenerationLanguage ModelsSpeech

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-09-08 · rubric v0.20.0
Composite quality — 43.5/100 · developing
Contract Quality 14.5 / 23
Developer Ergonomics 4.5 / 18
Access Clarity 10.0 / 18
Operational Transparency 3.1 / 12
Contract Governance 1.1 / 11
Discoverability 6.7 / 9
Create-or-Update Ergonomics 0.0 / 10
Agent readiness — 22/100 · agent aware
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
Documented Reversibility 6 / 6
MCP Server 0 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 0 / 8
Request/Response Examples 0 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 0 / 4
Consent & Bot Identity 0 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Delegated User Identity 0 / 6
Protected Resource Metadata 0 / 5
Registration Without a Human 0 / 6
Agentic Commerce Well-Known Document 0 / 5
Create-or-Update Ergonomics applies to this provider. This API accepts writes, so it carries 10 points of the composite. It is scored from the published contracts themselves: whether a caller can create-or-update in one call, whether the write accepts a key the caller already holds, and whether the response says which branch ran. Without that, every write needs a search-and-branch in front of it, and the first time that check is skipped a duplicate record is created. Scored against the observed mean rather than raw — a provider at the catalog average is unchanged by this facet, not penalised by it.
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. Every facet and dimension name above is a link: it opens that measurement's own page — what it means, the exact checks that feed it, how the whole catalog distributes on it, and the providers at the top of it. This rating is computed from github.com/api-evangelist/openai-apis: open an issue to ask a question, or submit a pull request to add artifacts. Submit an artifact on GitHub — free → Manage your own listing — the Influence plan, $499/mo →

APIs 12

Individual APIs this provider publishes, each with its own machine-readable definition.

OpenAI APIs Assistants API

Manage AI assistants

OpenAI APIs Chat API

Chat completion operations

OpenAI APIs Completions API

Legacy text completion operations

OpenAI APIs Embeddings API

Text embedding operations

OpenAI APIs Images API

Image generation, editing, and variation operations

OpenAI APIs Messages API

Manage messages within threads

OpenAI APIs Moderations API

Content moderation operations

OpenAI APIs Runs API

Execute assistants on threads

OpenAI APIs Speech API

Text-to-speech operations

OpenAI APIs Threads API

Manage conversation threads

OpenAI APIs Transcription API

Speech-to-text transcription operations

OpenAI APIs Translation API

Audio translation operations

Scroll for all 12

Postman Collections 12

Ready-to-run Postman collections for exercising this provider's APIs.

OpenAI APIs OpenAI Assistants API

POSTMAN

OpenAI APIs OpenAI Assistants Chat API

POSTMAN

OpenAI APIs OpenAI Assistants Completions API

POSTMAN

OpenAI APIs OpenAI Assistants Embeddings API

POSTMAN

OpenAI APIs OpenAI Assistants Images API

POSTMAN

OpenAI APIs OpenAI Assistants Messages API

POSTMAN

OpenAI APIs OpenAI Assistants Moderations API

POSTMAN

OpenAI APIs OpenAI Assistants Runs API

POSTMAN

OpenAI APIs OpenAI Assistants Speech API

POSTMAN

OpenAI APIs OpenAI Assistants Threads API

POSTMAN

OpenAI APIs OpenAI Assistants Transcription API

POSTMAN

OpenAI APIs OpenAI Assistants Translation API

POSTMAN

Scroll for all 12

Open Collections 20

Open, tool-agnostic API collections (OpenAPI-derived and Bruno).

API Collection

OPEN COLLECTION

OpenAI APIs OpenAI Assistants API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Chat API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Completions API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Embeddings API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Images API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Messages API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Moderations API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Runs API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Speech API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Threads API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Transcription API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants Translation API

OPEN COLLECTION

OpenAI APIs OpenAI Assistants API

OPEN COLLECTION

OpenAI APIs OpenAI Audio API

OPEN COLLECTION

OpenAI APIs OpenAI Chat Completions API

OPEN COLLECTION

OpenAI APIs OpenAI Completions API

OPEN COLLECTION

OpenAI APIs OpenAI Embeddings API

OPEN COLLECTION

OpenAI APIs OpenAI Images API

OPEN COLLECTION

OpenAI APIs OpenAI Moderations API

OPEN COLLECTION

Scroll for all 20

Pricing Plans 1

Published pricing tiers and plan structures.

Openai Apis Plans Pricing

6 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Openai Apis Rate Limits

7 limits

RATE LIMITS

FinOps 1

Cost, billing, and metering signals for API financial operations.

Openai Apis Finops

FINOPS

Semantic Vocabularies 1

JSON-LD contexts and semantic vocabularies used across these APIs.

Openai Context

0 classes · 13 properties

JSON-LD

Spectral Rules 1

Spectral governance rulesets for linting and validating these APIs.

OpenAI APIs API Rules

6 rules · 5 warnings 1 info

SPECTRAL

JSON Schema 38

Standalone JSON Schema definitions for this provider's data models.

Assistant

12 properties

JSON SCHEMA

ChatCompletionResponse

7 properties

JSON SCHEMA

ChatMessage

5 properties

JSON SCHEMA

CompletionResponse

7 properties

JSON SCHEMA

CreateAssistantRequest

9 properties

JSON SCHEMA

CreateChatCompletionRequest

17 properties

JSON SCHEMA

CreateCompletionRequest

16 properties

JSON SCHEMA

CreateEmbeddingRequest

5 properties

JSON SCHEMA

CreateImageEditRequest

8 properties

JSON SCHEMA

CreateImageRequest

8 properties

JSON SCHEMA

CreateImageVariationRequest

6 properties

JSON SCHEMA

CreateMessageRequest

3 properties

JSON SCHEMA

CreateModerationRequest

2 properties

JSON SCHEMA

CreateRunRequest

7 properties

JSON SCHEMA

CreateSpeechRequest

5 properties

JSON SCHEMA

CreateThreadRequest

2 properties

JSON SCHEMA

CreateTranscriptionRequest

7 properties

JSON SCHEMA

CreateTranslationRequest

5 properties

JSON SCHEMA

DeleteResponse

3 properties

JSON SCHEMA

Embedding

3 properties

JSON SCHEMA

EmbeddingResponse

4 properties

JSON SCHEMA

ImageResponse

2 properties

JSON SCHEMA

ListResponse

5 properties

JSON SCHEMA

Message

9 properties

JSON SCHEMA

ModerationResponse

3 properties

JSON SCHEMA

ModerationResult

3 properties

JSON SCHEMA

ModifyAssistantRequest

9 properties

JSON SCHEMA

Run

17 properties

JSON SCHEMA

Thread

4 properties

JSON SCHEMA

Tool

2 properties

JSON SCHEMA

ToolCall

3 properties

JSON SCHEMA

TranscriptionResponse

6 properties

JSON SCHEMA

TranslationResponse

1 properties

JSON SCHEMA

Usage

3 properties

JSON SCHEMA

OpenAI Assistant

12 properties

JSON SCHEMA

OpenAI Chat Completion

7 properties

JSON SCHEMA

OpenAI Embedding

3 properties

JSON SCHEMA

OpenAI Moderation Result

3 properties

JSON SCHEMA

Scroll for all 38

JSON Structure 1

JSON Structure definitions describing this provider's data shapes.

Openai Apis Structure

0 properties

JSON STRUCTURE

Security Posture 4

Authentication, domain security, vulnerability disclosure, and trust-center signals.

Openai Apis Authentication

http · 1 scheme

SECURITY

Openai Apis Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Openai Apis Vulnerability Disclosure

Bugcrowd · security.txt · contact published

SECURITY

Openai Apis Trust Center

SOC 2, ISO 27001, ISO 27017, ISO 27018, PCI DSS, FedRAMP, GDPR, CSA STAR

SECURITY

Agentic Access 1

Recommended x-agentic-access execution contracts for AI agents.

Openai Apis Agentic Access

28 operations · 21 acting

28 operations · 21 acting

AGENTIC

Resources

Agent Surfaces 1

MCP servers, agent skills, and machine-readable catalogs

AgenticAccess
AgenticAccess

Build 2

SDKs, sample code, and the tooling you integrate with

PostmanWorkspace
PostmanWorkspace
 GitHubOrganization
GitHubOrganization

Access & Security 5

Authentication, authorization, and security posture

TrustCenter
TrustCenter
 VulnerabilityDisclosure
VulnerabilityDisclosure
 DomainSecurity
DomainSecurity
 Authentication
Authentication
 Authentication
Authentication

Operate 1

Status, limits, changes, and where to get help

StatusPage
StatusPage

Commercial 3

Pricing, plans, and the legal terms of use

Pricing
Pricing
 TermsOfService
TermsOfService
 PrivacyPolicy
PrivacyPolicy

Company 2

The organization behind the API

Website
Website
 Blog
Blog

Source (apis.yml)

apis.yml Raw ↑ 
aid: openai-apis
name: OpenAI APIs
description: Collection of OpenAI's artificial intelligence APIs for natural language processing, image generation, speech,
  and embeddings including Chat Completions, Completions, Images, Audio, Embeddings, Moderations, and Assistants APIs.
type: Index
deliveryModel:
  model: saas
  open_source: false
  commercial: true
  callable_host: true
  label: Hosted service · you call their endpoint
  confidence: high
  source:
  - openapi
  - pricing
  generated: '2026-08-28'
  method: derived
accessModel:
  pricing: paid
  onboarding: unknown
  trial: false
  try_now: false
  public: false
  label: Paid
  confidence: medium
  source:
  - plans
  - authentication
  - security
  generated: '2026-09-03'
  method: derived
position: Consuming
access: 3rd-Party
image: https://kinlane-images.s3.amazonaws.com/shared/apis-json/icons/openai-apis.png
tags:
- Artificial Intelligence
- Embeddings
- Image-Generation
- Language Models
- Speech
tags_raw:
- Artificial Intelligence
- Embeddings
- Image Generation
- Language Models
- Speech
url: https://raw.githubusercontent.com/api-evangelist/openai-apis/refs/heads/main/apis.yml
created: '2024-01-01'
modified: '2026-05-19'
specificationVersion: '0.23'
apis:
- aid: openai-apis:openai-apis-assistants-api
  name: OpenAI APIs Assistants API
  description: Manage AI assistants
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Assistants
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-assistants-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-chat-api
  name: OpenAI APIs Chat API
  description: Chat completion operations
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Chat
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-chat-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-completions-api
  name: OpenAI APIs Completions API
  description: Legacy text completion operations
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Completions
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-completions-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-embeddings-api
  name: OpenAI APIs Embeddings API
  description: Text embedding operations
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Embeddings
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-embeddings-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-images-api
  name: OpenAI APIs Images API
  description: Image generation, editing, and variation operations
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Image
  tags_raw:
  - Images
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-images-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-messages-api
  name: OpenAI APIs Messages API
  description: Manage messages within threads
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Message
  tags_raw:
  - Messages
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-messages-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-moderations-api
  name: OpenAI APIs Moderations API
  description: Content moderation operations
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Moderations
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-moderations-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-runs-api
  name: OpenAI APIs Runs API
  description: Execute assistants on threads
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Runs
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-runs-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-speech-api
  name: OpenAI APIs Speech API
  description: Text-to-speech operations
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Speech
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-speech-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-threads-api
  name: OpenAI APIs Threads API
  description: Manage conversation threads
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Threads
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-threads-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-transcription-api
  name: OpenAI APIs Transcription API
  description: Speech-to-text transcription operations
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Transcription
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-transcription-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
- aid: openai-apis:openai-apis-translation-api
  name: OpenAI APIs Translation API
  description: Audio translation operations
  humanURL: https://platform.openai.com/docs/api-reference/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Translation
  properties:
  - type: OpenAPI
    url: openapi/openai-apis-translation-api-openapi.yml
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/completions
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/images
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/embeddings
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/audio
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/moderations
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/assistants
common:
- type: Website
  url: https://www.openai.com/
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/openai-apis/overview
- type: AgenticAccess
  url: agentic-access/openai-apis-agentic-access.yml
- type: TrustCenter
  url: security/openai-apis-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/openai-apis-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/openai-apis-domain-security.yml
- type: Authentication
  url: authentication/openai-apis-authentication.yml
- type: GitHubOrganization
  url: https://github.com/openai
- type: Authentication
  url: https://platform.openai.com/docs/api-reference/authentication
- type: Pricing
  url: https://openai.com/api/pricing/
- type: TermsOfService
  url: https://openai.com/policies/terms-of-use
- type: PrivacyPolicy
  url: https://openai.com/policies/privacy-policy
- type: StatusPage
  url: https://status.openai.com/
- url: https://openai.com/news/rss.xml
  type: Blog
maintainers:
- FN: Kin Lane
  email: kin@apievangelist.com

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