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
Start searching
API Dashboard
Try ChatGPT
Overview
Models
Agents
Tools
Voice & Audio
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
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
Voice & Audio
Home
Get started
Quickstart
Using GPT-5.6
Key concepts
Core concepts
Responses API
Conversation state
Background mode
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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
Deep dive
Tools
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 generation
Video generation
Realtime and audio
Audio and speech
Overview
Voice agents
Specialized models
Deep research
Embeddings
Moderation
Overview
Agents SDK
Quickstart
Agent definitions
Models and providers
Running agents
Sandbox agents
Orchestration
Guardrails
Results and state
Integrations and observability
Evaluate agent workflows
ChatKit