For the complete documentation index, see
llms.txt
. Markdown versions of documentation pages are available by appending
.md
to the page URL.
ChatGPT
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Guides, concepts, and product docs for Codex
Use cases
Example workflows and tasks teams can take on with ChatGPT or Codex
Docs
Use cases
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
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Overview
Features
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Administration
Use Cases
Resources
Search the docs
Search docs
Suggested
responses create
reasoning_effort
realtime
prompt caching
Primary navigation
API
Codex
ChatGPT
Docs
Use cases
Resources
Resources
Search docs
Suggested
responses create
reasoning_effort
realtime
prompt caching
Overview
Models
Agents
Tools
Voice & Audio
Production
API reference
Overview
Models
Agents
Tools
Voice & Audio
Production
API reference
Docs section
Overview
Home
Get started
Quickstart
Using GPT-5.6
Key concepts
Core concepts
Responses API
Conversation state
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Compaction
Counting tokens
SDKs and CLI
OpenAI SDK
OpenAI CLI
Resources