ChatGPT website screenshot

ChatGPT

OpenAI's ChatGPT API for conversational AI and language model interactions.

ChatGPT publishes 2 APIs on the APIs.io network, including OpenAI Responses API, and 1 more. Tagged areas include Agents, AI, ChatGPT, Embeddings, and Fine-Tuning.

The ChatGPT catalog on APIs.io includes 3 JSON-LD contexts and 2 Spectral governance rulesets.

ChatGPT’s developer surface includes changelog, CLI, authentication, developer portal, documentation, getting-started guide, pricing, and 42 more developer resources.

75.6/100 exemplar ▬ flat Agent 53/100 agent ready Full breakdown ↓
scored 2026-07-28 · rubric v0.6
AccessFreemiumSelf serve⚡ Free to try
2 APIs 1 MCP Servers 10 Features 6 Use Cases
AgentsAIChatGPTEmbeddingsFine-TuningGPT-4GPT-5Language ModelOpenAIRealtime

Kin Score

Kin Score Kin Score How this is scored →
scored 2026-07-28 · rubric v0.6
Composite quality — 75.6/100 · exemplar
Contract Quality 15.7 / 25
Developer Ergonomics 14.3 / 20
Commercial Clarity 18.4 / 20
Operational Transparency 10.3 / 13
Governance 8.4 / 12
Discoverability 8.5 / 10
Agent readiness — 53/100 · agent ready
Machine-Readable Contract 18 / 18
Agentic Access Contract 10 / 10
MCP Server 12 / 12
Machine-Readable Auth 10 / 10
Idempotency 0 / 9
Stable Error Semantics 8 / 8
Request/Response Examples 7 / 7
Rate-Limit Signaling 7 / 7
Typed Event Surface 0 / 6
Agent Skills 0 / 5
Well-Known Catalog 4 / 4
Consent & Bot Identity 3 / 3
A2A Agent Card 0 / 8
Dry-Run / Simulate Mode 0 / 4
Improve this rating by publishing the missing artifacts — every area above can be raised, and the full rubric is at apis.io/rating/. This rating is computed from github.com/api-evangelist/chatgpt: open an issue to ask a question, or submit a pull request to add artifacts. Want it done for you? Prioritized profiling — $2,500 →

APIs 2

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

ChatGPT API

API for accessing OpenAI's ChatGPT language models for chat completions and conversations.

OpenAI Responses API

The Responses API is OpenAI's recommended API primitive for new projects, an evolution of Chat Completions with built-in tools like web search, file search, code interpreter, an...

Postman Collections 2

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

Open Collections 2

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

ChatGPT Responses API

OPEN COLLECTION

Arazzo Workflows 8

Multi-step API workflows described with the Arazzo specification.

ChatGPT Chat Completion With Tool Calling

Run a chat completion offering a function tool and resolve the tool call.

ARAZZO

ChatGPT Create and Poll a Response

Create a stored response and poll it until generation completes.

ARAZZO

ChatGPT Describe an Image Input

Send an image URL to the Responses API and retrieve a text description.

ARAZZO

ChatGPT Moderation Gate Before Generation

Classify input safety with a chat completion, then generate only if it is safe.

ARAZZO

ChatGPT Multi-Turn Conversation

Start a conversation and continue it by chaining previous_response_id.

ARAZZO

ChatGPT Response Lifecycle With Cleanup

Create a stored response, read its output, then delete it.

ARAZZO

ChatGPT Structured JSON Output Response

Generate a response constrained to a caller-supplied JSON schema.

ARAZZO

ChatGPT Web Search Grounded Answer

Answer a question with the built-in web search tool and return citations.

ARAZZO

Scroll for all 8

MCP Servers 1

Model Context Protocol servers that expose these APIs to AI agents.

chatgpt-mcp.yml

MCP SERVER

Pricing Plans 1

Published pricing tiers and plan structures.

Chatgpt Plans Pricing

7 plans

PLANS

Rate Limits 1

Documented rate limits and quota policies.

Chatgpt Rate Limits

6 limits

RATE LIMITS

FinOps 1

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

Features 10

Notable capabilities this provider offers.

Chat Completions

Generate conversational responses using GPT models with support for text, function calling, structured outputs, vision inputs, and streaming.

Responses API

Next-generation API with built-in tools for web search, file search, computer use, and code interpreter supporting agentic workflows.

Embeddings

Generate vector representations of text for search, clustering, classification, and recommendation use cases.

Image Generation

Create and edit images from text prompts using DALL-E and GPT Image models.

Audio and Speech

Text-to-speech generation, speech transcription, and translation using Whisper and other audio models.

Content Moderation

Classify text and images to detect potentially harmful content across safety categories.

Fine-Tuning

Customize OpenAI models on your own training data for domain-specific performance improvements.

Batch Processing

Send asynchronous groups of requests at lower cost with higher rate limits.

Realtime Communication

Ultra-low latency multimodal communication over WebRTC, WebSocket, and SIP.

Vector Stores

Manage collections of processed files for retrieval-augmented generation with the file search tool.

Scroll for all 10

Semantic Vocabularies 3

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

Chatgpt Chat Completions Context

0 classes · 0 properties

JSON-LD

Chatgpt Context

0 classes · 16 properties

JSON-LD

Chatgpt Responses Context

0 classes · 0 properties

JSON-LD

Spectral Rules 2

Spectral governance rulesets for linting and validating these APIs.

ChatGPT API Rules

6 rules · 5 warnings 1 info

SPECTRAL

ChatGPT API Rules

16 rules · 8 errors 8 warnings

SPECTRAL

JSON Schema 53

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

Annotation

7 properties

JSON SCHEMA

ChatGPT Chat Completion

8 properties

JSON SCHEMA

ChatCompletionAssistantMessage

4 properties

JSON SCHEMA

ChatCompletionChoice

3 properties

JSON SCHEMA

ChatCompletionContentPart

4 properties

JSON SCHEMA

ChatCompletionMessage

6 properties

JSON SCHEMA

ChatCompletionNamedToolChoice

2 properties

JSON SCHEMA

ChatCompletionToolCall

3 properties

JSON SCHEMA

ChatCompletionTool

1 properties

JSON SCHEMA

CompletionUsage

5 properties

JSON SCHEMA

CreateChatCompletionRequest

21 properties

JSON SCHEMA

CreateChatCompletionResponse

7 properties

JSON SCHEMA

ErrorResponse

1 properties

JSON SCHEMA

FunctionDefinition

4 properties

JSON SCHEMA

ResponseFormat

2 properties

JSON SCHEMA

TokenLogprob

4 properties

JSON SCHEMA

ChatCompletionAssistantMessage

4 properties

JSON SCHEMA

ChatCompletionChoice

4 properties

JSON SCHEMA

ChatCompletionContentPart

4 properties

JSON SCHEMA

ChatCompletionMessage

6 properties

JSON SCHEMA

ChatCompletionNamedToolChoice

2 properties

JSON SCHEMA

ChatCompletionTool

2 properties

JSON SCHEMA

ChatCompletionToolCall

3 properties

JSON SCHEMA

CompletionUsage

5 properties

JSON SCHEMA

CreateChatCompletionRequest

22 properties

JSON SCHEMA

CreateChatCompletionResponse

8 properties

JSON SCHEMA

CreateResponseRequest

17 properties

JSON SCHEMA

ErrorResponse

1 properties

JSON SCHEMA

FunctionDefinition

4 properties

JSON SCHEMA

ChatGPT Response

21 properties

JSON SCHEMA

ResponseFormat

2 properties

JSON SCHEMA

ResponseInputContentPart

6 properties

JSON SCHEMA

ResponseInputItem

7 properties

JSON SCHEMA

ResponseInputItemList

5 properties

JSON SCHEMA

ResponseObject

22 properties

JSON SCHEMA

ResponseOutputContentPart

4 properties

JSON SCHEMA

ResponseOutputItem

9 properties

JSON SCHEMA

Annotation

7 properties

JSON SCHEMA

CreateResponseRequest

17 properties

JSON SCHEMA

ErrorResponse

1 properties

JSON SCHEMA

ResponseInputContentPart

6 properties

JSON SCHEMA

ResponseInputItemList

5 properties

JSON SCHEMA

ResponseInputItem

7 properties

JSON SCHEMA

ResponseObject

21 properties

JSON SCHEMA

ResponseOutputContentPart

4 properties

JSON SCHEMA

ResponseOutputItem

9 properties

JSON SCHEMA

ResponseToolChoice

2 properties

JSON SCHEMA

ResponseTool

16 properties

JSON SCHEMA

ResponseUsage

5 properties

JSON SCHEMA

ResponseTool

16 properties

JSON SCHEMA

ResponseToolChoice

2 properties

JSON SCHEMA

ResponseUsage

5 properties

JSON SCHEMA

TokenLogprob

4 properties

JSON SCHEMA

Scroll for all 53

JSON Structure 27

JSON Structure definitions describing this provider's data shapes.

Chatgpt Responses Annotation Structure

7 properties

JSON STRUCTURE

Chatgpt Responses Error Response Structure

1 properties

JSON STRUCTURE

Chatgpt Responses Response Object Structure

21 properties

JSON STRUCTURE

Chatgpt Responses Response Tool Structure

16 properties

JSON STRUCTURE

Chatgpt Responses Response Usage Structure

5 properties

JSON STRUCTURE

Chatgpt Structure

0 properties

JSON STRUCTURE

Scroll for all 27

Examples 31

Example request and response payloads for these APIs.

Scroll for all 31

Security Posture 4

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

Chatgpt Authentication

http · 1 scheme

SECURITY

Chatgpt Domain Security

TLSv1.3 · HSTS · DMARC

SECURITY

Chatgpt Vulnerability Disclosure

Bugcrowd · security.txt · contact published

SECURITY

Chatgpt 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.

Chatgpt Agentic Access

5 operations · 3 acting

5 operations · 3 acting

AGENTIC

Use Cases 6

What developers build with this provider.

Customer Support Automation

Build AI-powered chatbots and support agents that handle customer inquiries, troubleshoot issues, and escalate complex cases.

Content Generation

Generate marketing copy, blog posts, product descriptions, and creative content at scale.

Code Assistance

Help developers write, review, debug, and explain code across multiple programming languages.

Data Analysis

Extract insights from unstructured text, summarize documents, and perform sentiment analysis.

Multimodal Applications

Build applications that process text, images, and audio inputs together for richer user experiences.

Agentic Workflows

Create autonomous AI agents that use tools, search the web, and execute multi-step tasks.

Integrations 4

Pre-built integrations with other platforms and tools.

Microsoft Azure OpenAI

Deploy OpenAI models on Azure infrastructure with enterprise security, compliance, and regional availability.

LangChain

Build LLM-powered applications using the LangChain framework with OpenAI model providers.

Zapier

Connect ChatGPT to thousands of apps for automated workflows without code.

Slack

Integrate ChatGPT into Slack workspaces for team collaboration and AI-assisted communication.

Resources

Get Started 4

Portal, sign-up, and the first successful call

Documentation 2

Reference material describing how the API behaves

Agent Surfaces 4

MCP servers, agent skills, and machine-readable catalogs

Design & Contract 14

Pagination, idempotency, versioning, errors, and events

Scroll for all 14

Build 6

SDKs, sample code, and the tooling you integrate with

Access & Security 7

Authentication, authorization, and security posture

Scroll for all 7

Operate 5

Status, limits, changes, and where to get help

Commercial 3

Pricing, plans, and the legal terms of use

Company 1

The organization behind the API

Other 3

Properties that don't map to a standard resource type

Source (apis.yml)

apis.yml Raw ↑
name: ChatGPT
description: OpenAI's ChatGPT API for conversational AI and language model interactions.
accessModel:
  pricing: freemium
  onboarding: self-serve
  trial: false
  try_now: true
  public: false
  label: Freemium · Self-serve signup
  confidence: high
  source:
  - plans
  - authentication
  generated: '2026-07-22'
  method: derived
image: https://openai.com/content/images/2023/05/openai-avatar.png
url: https://platform.openai.com/docs/api-reference
created: '2024'
modified: '2026-06-20'
specificationVersion: '0.18'
kind: contract
access: 3rd-Party
apis:
- name: ChatGPT API
  description: API for accessing OpenAI's ChatGPT language models for chat completions and conversations.
  image: https://openai.com/content/images/2023/05/openai-avatar.png
  humanURL: https://platform.openai.com/docs/guides/chat
  baseURL: https://api.openai.com/v1
  tags:
  - Artificial Intelligence
  - Chatbot
  - Conversational AI
  - Machine Learning
  - Natural Language Processing
  properties:
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/chat
  - type: OpenAPI
    url: https://github.com/openai/openai-openapi/blob/master/openapi.yaml
  - type: OpenAPI
    url: openapi/chatgpt-chat-completions-api-openapi.yml
  - type: JSONSchema
    url: json-schema/chatgpt-chat-completion-schema.json
  - type: JSONLD
    url: json-ld/chatgpt-context.jsonld
  - type: Authentication
    url: https://platform.openai.com/docs/api-reference/authentication
  - type: Pricing
    url: https://openai.com/pricing
  - type: RateLimits
    url: https://platform.openai.com/docs/guides/rate-limits
  - type: TermsOfService
    url: https://openai.com/terms
  - type: PrivacyPolicy
    url: https://openai.com/privacy
  - type: StatusPage
    url: https://status.openai.com
  - type: Support
    url: https://help.openai.com
  - type: GitHubOrganization
    url: https://github.com/openai
  - type: GettingStarted
    url: https://platform.openai.com/docs/quickstart
  - type: ChangeLog
    url: https://platform.openai.com/docs/changelog
  - type: Blog
    url: https://openai.com/blog
  - type: SDKs
    url: https://developers.openai.com/api/docs/libraries/
  - type: Security
    url: https://openai.com/business-data/
  - type: Models
    url: https://platform.openai.com/docs/models
  - type: Signup
    url: https://platform.openai.com/signup
  - type: Login
    url: https://platform.openai.com/login
  contact:
  - type: Support
    url: https://help.openai.com
- name: OpenAI Responses API
  description: The Responses API is OpenAI's recommended API primitive for new projects, an evolution of Chat Completions
    with built-in tools like web search, file search, code interpreter, and support for agentic workflows.
  image: https://openai.com/content/images/2023/05/openai-avatar.png
  humanURL: https://platform.openai.com/docs/api-reference/responses
  baseURL: https://api.openai.com/v1
  tags:
  - Agents
  - Artificial Intelligence
  - Conversational AI
  - Responses
  - Tools
  properties:
  - type: Documentation
    url: https://platform.openai.com/docs/api-reference/responses
  - type: OpenAPI
    url: https://github.com/openai/openai-openapi/blob/master/openapi.yaml
  - type: OpenAPI
    url: openapi/chatgpt-responses-api-openapi.yml
  - type: JSONSchema
    url: json-schema/chatgpt-response-schema.json
  - type: JSONLD
    url: json-ld/chatgpt-responses-context.jsonld
  contact:
  - type: Support
    url: https://help.openai.com
maintainers:
- name: Kin Lane
  email: kin@apievangelist.com
  url: https://apievangelist.com
- name: OpenAI
  email: support@openai.com
  url: https://openai.com
common:
- type: Packages
  url: packages/chatgpt-packages.yml
- type: WellKnown
  url: well-known/chatgpt-well-known.yml
- type: SecurityTxt
  url: well-known/chatgpt-security.txt
- type: MCPServer
  url: mcp/chatgpt-mcp.yml
- type: LLMsTxt
  url: llms/chatgpt-llms.txt
- type: Overlay
  url: overlays/chatgpt-chat-completions-api-overlay.yaml
  name: Chat Completions API enhancements
- type: Overlay
  url: overlays/chatgpt-responses-api-overlay.yaml
  name: Responses API enhancements
- type: Conformance
  url: conformance/chatgpt-conformance.yml
- type: ErrorCatalog
  url: errors/chatgpt-problem-types.yml
- type: Lifecycle
  url: lifecycle/chatgpt-lifecycle.yml
- type: Conventions
  url: conventions/chatgpt-conventions.yml
- type: ChangeLog
  url: changelog/chatgpt-changelog.yml
- type: CLI
  url: cli/chatgpt-cli.yml
- type: Components
  url: components/chatgpt-components.yml
- type: DataModel
  url: data-model/chatgpt-data-model.yml
- type: AgenticAccess
  url: agentic-access/chatgpt-agentic-access.yml
- type: TrustCenter
  url: security/chatgpt-trust-center.yml
- type: VulnerabilityDisclosure
  url: security/chatgpt-vulnerability-disclosure.yml
- type: DomainSecurity
  url: security/chatgpt-domain-security.yml
- type: Authentication
  url: authentication/chatgpt-authentication.yml
- type: PostmanWorkspace
  url: https://www.postman.com/kinlaneapi/chatgpt/overview
- type: Arazzo
  url: arazzo/chatgpt-chat-completion-tool-call-workflow.yml
  name: ChatGPT Chat Completion With Tool Calling
- type: Arazzo
  url: arazzo/chatgpt-create-and-poll-response-workflow.yml
  name: ChatGPT Create and Poll a Response
- type: Arazzo
  url: arazzo/chatgpt-image-input-describe-workflow.yml
  name: ChatGPT Describe an Image Input
- type: Arazzo
  url: arazzo/chatgpt-moderation-gate-generate-workflow.yml
  name: ChatGPT Moderation Gate Before Generation
- type: Arazzo
  url: arazzo/chatgpt-multi-turn-conversation-workflow.yml
  name: ChatGPT Multi-Turn Conversation
- type: Arazzo
  url: arazzo/chatgpt-response-lifecycle-cleanup-workflow.yml
  name: ChatGPT Response Lifecycle With Cleanup
- type: Arazzo
  url: arazzo/chatgpt-structured-output-response-workflow.yml
  name: ChatGPT Structured JSON Output Response
- type: Arazzo
  url: arazzo/chatgpt-web-search-answer-workflow.yml
  name: ChatGPT Web Search Grounded Answer
- type: Portal
  url: https://platform.openai.com
- type: Documentation
  url: https://platform.openai.com/docs/api-reference
- type: GettingStarted
  url: https://platform.openai.com/docs/quickstart
- type: Authentication
  url: https://platform.openai.com/docs/api-reference/authentication
- type: Pricing
  url: https://openai.com/pricing
- type: RateLimits
  url: https://platform.openai.com/docs/guides/rate-limits
- type: ChangeLog
  url: https://platform.openai.com/docs/changelog
- type: Blog
  url: https://openai.com/blog
- type: StatusPage
  url: https://status.openai.com
- type: Support
  url: https://help.openai.com
- type: GitHubOrganization
  url: https://github.com/openai
- type: SDKs
  url: https://developers.openai.com/api/docs/libraries/
- type: CodeExamples
  url: https://cookbook.openai.com/
- type: OpenAPI
  url: https://github.com/openai/openai-openapi/blob/master/openapi.yaml
- type: TermsOfService
  url: https://openai.com/terms
- type: PrivacyPolicy
  url: https://openai.com/privacy
- type: Security
  url: https://openai.com/business-data/
- type: Models
  url: https://platform.openai.com/docs/models
- type: Signup
  url: https://platform.openai.com/signup
- type: Login
  url: https://platform.openai.com/login
- type: Features
  data:
  - name: Chat Completions
    description: Generate conversational responses using GPT models with support for text, function calling, structured outputs,
      vision inputs, and streaming.
  - name: Responses API
    description: Next-generation API with built-in tools for web search, file search, computer use, and code interpreter supporting
      agentic workflows.
  - name: Embeddings
    description: Generate vector representations of text for search, clustering, classification, and recommendation use cases.
  - name: Image Generation
    description: Create and edit images from text prompts using DALL-E and GPT Image models.
  - name: Audio and Speech
    description: Text-to-speech generation, speech transcription, and translation using Whisper and other audio models.
  - name: Content Moderation
    description: Classify text and images to detect potentially harmful content across safety categories.
  - name: Fine-Tuning
    description: Customize OpenAI models on your own training data for domain-specific performance improvements.
  - name: Batch Processing
    description: Send asynchronous groups of requests at lower cost with higher rate limits.
  - name: Realtime Communication
    description: Ultra-low latency multimodal communication over WebRTC, WebSocket, and SIP.
  - name: Vector Stores
    description: Manage collections of processed files for retrieval-augmented generation with the file search tool.
- type: UseCases
  data:
  - name: Customer Support Automation
    description: Build AI-powered chatbots and support agents that handle customer inquiries, troubleshoot issues, and escalate
      complex cases.
  - name: Content Generation
    description: Generate marketing copy, blog posts, product descriptions, and creative content at scale.
  - name: Code Assistance
    description: Help developers write, review, debug, and explain code across multiple programming languages.
  - name: Data Analysis
    description: Extract insights from unstructured text, summarize documents, and perform sentiment analysis.
  - name: Multimodal Applications
    description: Build applications that process text, images, and audio inputs together for richer user experiences.
  - name: Agentic Workflows
    description: Create autonomous AI agents that use tools, search the web, and execute multi-step tasks.
- type: Integrations
  data:
  - name: Microsoft Azure OpenAI
    description: Deploy OpenAI models on Azure infrastructure with enterprise security, compliance, and regional availability.
  - name: LangChain
    description: Build LLM-powered applications using the LangChain framework with OpenAI model providers.
  - name: Zapier
    description: Connect ChatGPT to thousands of apps for automated workflows without code.
  - name: Slack
    description: Integrate ChatGPT into Slack workspaces for team collaboration and AI-assisted communication.
tags:
- Agents
- AI
- ChatGPT
- Embeddings
- Fine-Tuning
- GPT-4
- GPT-5
- Language Model
- OpenAI
- Realtime