Get started

• Overview
• Quickstart
• Models
• Pricing
• Libraries
• Docs MCP
• Latest: GPT-5.2

Core concepts

• Text generation
• Code generation
• Images and vision
• Audio and speech
• Structured output
• Function calling
• Responses API

Agents

• Overview
• Build agents

  • Agent Builder
  • Node reference
  • Safety in building agents
  • Agents SDK
• Deploy in your product

  • ChatKit
  • Custom theming
  • Widgets
  • Actions
  • Advanced integration
• Optimize

  • Agent evals
  • Trace grading
• Voice agents

Tools

• Using tools
• Connectors and MCP
• Skills
• Shell
• Web search
• Code interpreter
• File search and retrieval

  • File search
  • Retrieval
• More tools

  • Image generation
  • Computer use
  • Local shell tool
  • Apply patch

Run and scale

• Conversation state
• Compaction
• Background mode
• Streaming
• Webhooks
• File inputs
• Prompting

  • Overview
  • Prompt caching
  • Prompt engineering
• Reasoning

  • Reasoning models
  • Reasoning best practices

Evaluation

• Getting started
• Working with evals
• Prompt optimizer
• External models
• Best practices

Realtime API

• Overview
• Connect

  • WebRTC
  • WebSocket
  • SIP
• Usage

  • Using realtime models
  • Managing conversations
  • Webhooks and server-side controls
  • Managing costs
  • Realtime transcription
  • Voice agents

Model optimization

• Optimization cycle
• Fine-tuning

  • Supervised fine-tuning
  • Vision fine-tuning
  • Direct preference optimization
  • Reinforcement fine-tuning
  • RFT use cases
  • Best practices
• Graders

Specialized models

• Image generation
• Video generation
• Text to speech
• Speech to text
• Deep research
• Embeddings
• Moderation

Coding agents

• Codex cloud
• Agent internet access
• Codex CLI
• Codex IDE
• Codex changelog

Going live

• Production best practices
• Latency optimization

  • Overview
  • Predicted Outputs
  • Priority processing
• Cost optimization

  • Overview
  • Batch
  • Flex processing
• Accuracy optimization
• Safety

  • Safety best practices
  • Safety checks
  • Under 18 API Guidance

Legacy APIs

• Assistants API

  • Migration guide
  • Deep dive
  • Tools

Resources

• Terms and policies
• Changelog
• Your data
• Permissions
• Rate limits
• Deprecations
• MCP for deep research
• Developer mode
• ChatGPT Actions

  • Introduction
  • Getting started
  • Actions library
  • Authentication
  • Production
  • Data retrieval
  • Sending files

Getting Started

• Overview
• Quickstart
• Explore
• Pricing
• Ambassadors
• Concepts

  • Prompting
  • Workflows
  • Models

Using Codex

• App

  • Overview
  • Features
  • Settings
  • Review
  • Automations
  • Worktrees
  • Local Environments
  • Commands
  • Troubleshooting
• IDE Extension

  • Overview
  • Features
  • Settings
  • IDE Commands
  • Slash commands
• CLI

  • Overview
  • Features
  • Command Line Options
  • Slash commands
• Web

  • Overview
  • Environments
  • Internet Access
• Integrations

  • GitHub
  • Slack
  • Linear

Configuration

• Config File

  • Config Basics
  • Advanced Config
  • Config Reference
  • Sample Config
• Rules
• AGENTS.md
• MCP
• Skills

Administration

• Authentication
• Security
• Enterprise

  • Admin Setup
  • Governance
• Windows

Automation

• Non-interactive Mode
• Codex SDK
• App Server
• MCP Server
• GitHub Action

Learn

• Videos
• Blog

  • Testing Agent Skills Systematically with Evals
  • Supercharging Codex with JetBrains MCP at Skyscanner
  • View all
• Cookbooks

  • Codex Prompting Guide
  • Modernizing your Codebase with Codex
  • View all
• Building AI Teams

Releases

• Changelog
• Feature Maturity
• Open Source

• Home
• Quickstart

Core Concepts

• MCP Apps in ChatGPT
• MCP Server
• UX principles
• UI guidelines

Plan

• Research use cases
• Define tools
• Design components

Build

• Set up your server
• Build your ChatGPT UI
• Authenticate users
• Manage state
• Monetize your app
• Examples

Deploy

• Deploy your app
• Connect from ChatGPT
• Test your integration
• Submit your app

Guides

• Optimize Metadata
• Security & Privacy
• Troubleshooting

Resources

• App submission guidelines
• Reference

• Home

Guides

• Get started
• Key concepts
• Production readiness

Commerce specs

• Agentic Checkout
• Delegated Payment

Product feeds

• Overview
• Onboarding
• Feed spec
• Best practices

• Home
• Changelog
• Docs MCP

Categories

• Code
• Cookbooks
• Guides
• Videos

Topics

• Agents
• Audio & Voice
• Computer use
• Codex
• Evals
• gpt-oss
• Fine-tuning
• Image generation
• Scaling
• Tools
• Video generation

• Home

Topics

• Agents
• Evals
• Multimodal
• Text
• Guardrails
• Optimization
• ChatGPT
• Codex
• gpt-oss

Contribute

• Cookbook on GitHub

• All posts

Recent

• Shell + Skills + Compaction: Tips for long-running agents that do real work
• 15 lessons learned building ChatGPT Apps
• Testing Agent Skills Systematically with Evals
• Supercharging Codex with JetBrains MCP at Skyscanner
• OpenAI for Developers in 2025

Topics

• General
• API
• Apps SDK
• Audio
• Codex