For the complete documentation index, see
llms.txt
. Markdown versions of documentation pages are available by appending
.md
to the page URL.
ChatGPT
Home
API
Codex
Docs
Guides, concepts, and product docs for Codex
Use cases
Example workflows and tasks teams can take on with ChatGPT or Codex
Docs
Use cases
Training
Resources
ChatGPT
Plugins
Extend ChatGPT and Codex
Workspace Agents
Trigger published ChatGPT workspace agents
Commerce
Build commerce flows in ChatGPT
Ads
Publish and measure ads in ChatGPT
Resources
Showcase
Demo apps to get inspired
Blog
Learnings and experiences from developers
Cookbook
Notebook examples for building with OpenAI models
Learn
Docs, videos, and demo apps for building with OpenAI
Community
Programs, meetups, and support for builders
Start searching
API Dashboard
Try ChatGPT
Overview
Models
Agents
Tools
Audio & voice
Production
API reference
Search the API docs
Search docs
Suggested
responses create
reasoning_effort
realtime
prompt caching
Primary navigation
API
Codex
ChatGPT
Docs
Use cases
Training
Resources
Resources
Search docs
Suggested
responses create
reasoning_effort
realtime
prompt caching
Overview
Models
Agents
Tools
Audio & voice
Production
API reference
Overview
Models
Agents
Tools
Audio & voice
Production
API reference
Docs
Overview
Home
Get started
Quickstart
Using GPT-6 Astra
Key concepts
Core concepts
Responses API
Conversation state
Background mode
Streaming
WebSocket mode
Mid-turn steering
Multi-agent
Webhooks
File inputs
Compaction
Counting tokens
SDKs and CLI
OpenAI SDK
OpenAI CLI
Resources
Changelog
Deprecations
Supported countries
OpenAI Crawlers
Terms and policies
Legacy APIs
Agent Builder
Overview
Migration guide
Node reference
Safety in building agents
Evals
Getting started
Working with evals
Prompt optimizer
External models
Best practices
Graders
Fine-tuning
Optimization cycle
Supervised fine-tuning
Vision fine-tuning
Direct preference optimization
Reinforcement fine-tuning
RFT use cases
Best practices
Assistants API
Migration guide
Model catalog
Choose a model
Pricing
Model selection
Text and code
Text generation
Code generation
Structured output
Prompting
Overview
Prompt engineering
Citation formatting
Migration guide
Prompt generation
Frontend prompting
Reasoning
Reasoning models
Reasoning best practices
Images and video
Images and vision
Image input cost calculator
Image generation
Overview
Image prompting
Video generation
Realtime and audio
Audio and speech
Getting started
Voice agents
Specialized models
Deep research
Embeddings
Moderation
Overview
Agents API
Overview
Quickstart
Architecture
Configuring Agents
Sessions
Run and continue sessions
Events and items
Manage sessions
Webhooks
Environments and sandboxes
OpenAI-hosted sandboxes
Self-hosted sandboxes
Sandbox lifecycle
Sandbox security
Files and artifacts
Tools and integrations
Web search
Functions
MCP connections
Plugins
Vaults
Multi-agent
Observability and usage
Tracing
Agents SDK
Overview
Quickstart
Agent definitions
Models and providers
Running agents
Sandbox agents
Orchestration
Guardrails
Results and state
Integrations and observability
Evaluate agent workflows
ChatKit
Overview
Customize
Widgets
Actions
Advanced integrations
Overview
Function calling
Search and retrieval
Web search
File search
Retrieval
Connect tools and data
MCP and Connectors
Secure MCP Tunnel
Build tool workflows
Skills
Tool search
