Get inspired and build
Codex code review
Walkthrough of how Codex drives end-to-end pull request reviews with the new onboarding flow.
Building with Open Models
Talk covering how developers customize and deploy OpenAI’s open models.
Context Engineering & Coding Agents with Cursor
Session on structuring context for agent workflows inside the Cursor editor.
Live Demo Showcase: Tools That 10x Your Codebase
Live walkthrough of Codex-powered tooling that accelerates software delivery.
OpenAI Codex in your code editor
Walkthrough of the Codex IDE extension for VS Code, Cursor, and other forks.
Shipping with Codex
DevDay talk on building, testing, and delivering products with Codex.
Sora, ImageGen, and Codex: The Next Wave of Creative Production
Panel discussion on combining Sora, ImageGen, and Codex for media creation.
Using OpenAI Codex CLI with GPT-5-Codex
Overview of running the Codex CLI locally with GPT-5-Codex.
Apps SDK examples
Example demo apps and corresponding MCP servers for the Apps SDK.
ChatKit advanced samples
Advanced samples showcasing the capabilities of ChatKit (part of AgentKit).
ChatKit starter app
Integrate ChatKit with an Agent Builder workflow in your application.
Sora prompting guide
Cookbook guide showing how to prompt Sora 2 in the API.
Sora starter app
Sample app showcasing integrations with Sora in the API.
Codex prompting guide
Cookbook guide on how to prompt GPT-5 Codex to optimize agentic coding workflows.
Rate limits guide
Guide to understanding and managing rate limits
Web search guide
Guide to using web search with the Responses API.
4o image generation intro
Video introduction to 4o model image generation capabilities.
Agent orchestration & handoffs
Cookbook on coordinating multiple agents via routines and handoffs.
Agents SDK — Python
Python SDK for developing agents with OpenAI.
Agents SDK — TypeScript
TypeScript SDK for developing agents with OpenAI.
Agents SDK quickstart
Step-by-step guide to quickly build agents with the OpenAI Agents SDK.
Agents SDK quickstart
Quickstart project for building agents with the Agents SDK.
Background mode guide
Guide to running tasks in the background with Responses.
Balance accuracy, latency, and cost
Talk on optimizing AI systems for accuracy, speed, and cost.
Batch API guide
Guide on how to use the Batch API to reduce costs
Build hour — agentic tool calling
Build hour giving an overview of agentic tool calling.
Build hour — built-in tools
Build hour giving an overview of built-in tools available in the Responses API.
Building agents guide
Official guide to building agents using the OpenAI platform.
Building guardrails for agents
Guide to implementing safeguards and guardrails in agent applications.
Built-in tools guide
Guide to using OpenAI's built-in tools with the Responses API.
Codex intro
Introductory video introducing Codex and its capabilities.
Computer Use API — starter app
Sample app showcasing Computer Use API integration.
Computer Use API guide
Guide to using the Computer Use API (CUA).
Conversation state guide
Guide for managing conversation state with the Responses API.
DevDay — distillation breakout
DevDay session on model distillation techniques.
DevDay — optimization breakout
DevDay session discussing optimization of models and prompts.
DevDay — realtime breakout
DevDay session focused on realtime agent capabilities.
DevDay — structured outputs breakout
Session covering structured outputs from DevDay.
Developing hallucination guardrails
Cookbook for creating guardrails that reduce model hallucinations.
Distillation for model fine-tuning
Cookbook on using model distillation techniques for fine-tuning.
Eval-driven dev — prototype to launch
Cookbook demonstrating eval-driven development workflows.
Evals API — tools evaluation
Cookbook example demonstrating tool evaluation with the Evals API.
Evals design guide
Learn best practices for designing evals
Evaluating model performance
Guide to measuring model quality using the Evals framework.
File search guide
Guide to retrieving context from files using the Responses API.
Flex processing guide
Guide on how to reduce costs with flex processing
Frontend testing demo
Demo application for frontend testing using CUA.
Function calling guide
Introduction to function calling with OpenAI models.
GPT-5 prompting guide
Cookbook guide on how to maximize GPT-5's performance.
Graders for Reinforcement Fine-Tuning
Cookbook on how to use graders for RFT tasks. showing different approaches to evaluating models with the OpenAI API.
Graders guide
Learn about graders for evals and fine-tuning
Image generation guide
Guide to generating images using OpenAI models.
ImageGen cookbook
Cookbook examples for generating images with GPT-Image.
ImageGen with high fidelity cookbook
Cookbook examples for generating images with high fidelity using GPT-Image.
Keep costs low & accuracy high
Guide on balancing cost efficiency with model accuracy.
Latency optimization guide
Best practices for reducing model response latency.
Launch apps with evaluations
Video on incorporating evals when deploying AI products.
LLM correctness and consistency
Best practices for achieving accurate and consistent model outputs.
MCP guide
Guide to using the Model Context Protocol for portable tools.
MCP intro
Introduction video to Model Customization Platform (MCP).
MCP tool cookbook
Cookbook covering MCP tool usage examples.
Model distillation overview
Overview of distillation techniques for creating efficient models.
Model optimization guide
Guide on optimizing OpenAI models for performance and cost.
Monitor usage with the Cost API
Cookbook showing how to track API usage and costs.
Multi-tool orchestration cookbook
Cookbook showing how to orchestrate multiple tools with Responses API.
New audio models intro
Overview video of new audio models for speech and transcription.
o3/o4-mini function calling cookbook
Cookbook for function calling with o3/o4-mini models.
OpenAI models page
Overview of the models available on the OpenAI platform.
openai.fm
Code samples for speech processing from the openai.fm repo.
Orchestrating multiple agents
Guide to coordinating multiple agents with shared context.
Portfolio collab with Agents SDK
Cookbook example of agents collaborating to manage a portfolio.
Predicted outputs guide
Guide to understanding and using predicted outputs.
Production best practices
Guide on best practices for running AI applications in production
Prompt caching 101
Introductory cookbook on implementing prompt caching to reduce token usage.
Prompt engineering guide
Detailed guide on prompt engineering strategies.
RAG technique overview
Overview of retrieval-augmented generation techniques.
RAG with PDFs cookbook
Cookbook for retrieval-augmented generation using PDFs.
Realtime & Twilio starter app
Starter app integrating realtime agents with Twilio.
Realtime agent demo
Video introduction to the TypeScript Agents SDK.
Realtime console
Console application demonstrating realtime API usage.
Realtime guide
Comprehensive guide to building realtime interactions.
Realtime intro
Introduction to building realtime voice applications.
Realtime solar system
Demo of realtime agent interactions in a solar system example.
Realtime tool delegation guide
Guide on delegating tasks through tools in realtime agents.
Realtime transcription guide
Guide for implementing realtime speech transcription.
Realtime translation cookbook
Cookbook for realtime translation using voice API.
Realtime translation guide
Guide to performing realtime speech translation.
Reasoning best practices
Prompting and optimization tips for reasoning models
Reasoning guide
Overview of what reasoning is and how to prompt reasoning models
Reinforcement fine-tuning — reasoning
Cookbook demonstrating reinforcement fine-tuning to enhance conversational models.
Reinforcement fine-tuning overview
Guide on reinforcement learning-based fine-tuning techniques.
Responses API — tools and features
Overview video of available tools and capabilities in the Responses API.
Responses guide
Introduction to the Responses API and its endpoints.
Responses starter app
Starter application demonstrating OpenAI Responses API with tools.
Responses vs. chat completions guide
Comparison of the Responses API and Chat Completions.
Speech-to-text cookbook
Comparing speech to text methods with the OpenAI API.
Speech-to-text guide
Guide for building speech recognition pipelines.
Speech-to-text intro
Introduction to speech recognition with OpenAI.
Structured outputs guide
Guide for producing structured outputs with the Responses API.
Structured outputs samples
Sample code demonstrating structured outputs with OpenAI APIs.
Supervised fine-tuning overview
Guide to supervised fine-tuning for customizing model behavior.
Tools overview guide
Guide covering realtime delegation through tools.
Tracing module
Guide to monitoring and debugging agents with tracing.
Transcription cookbook
Example recipes for transcribing audio using OpenAI APIs.
Transcription guide
Detailed guide for building transcription pipelines.
Transcription intro
Introduction to converting speech to text with OpenAI APIs.
Translation use case
Overview of building multilingual voice applications.
Unlock agentic power — Agents SDK
Video demonstrating advanced capabilities of the Agents SDK.
Vision fine-tuning overview
Guide to fine-tuning models on vision tasks.
Voice agents guide
Guide to building voice agents using speech-to-speech API.
Voice applications intro
Introduction to building voice-enabled applications with OpenAI.
Code interpreter guide
Guide to using the built-in code interpreter tool.
Audio & speech guide
Overview of approaches for audio processing and speech in applications.
CS agents demo
Demo showcasing customer service agents orchestration.
Fine-tuning best practices
Recommendations for effective and efficient model fine-tuning.
Fine-tuning cookbook
Cookbook on direct preference optimization for fine-tuning.
Fine-tuning guide
Comprehensive guide to fine-tuning OpenAI models.
Realtime agents starter app
Starter app demonstrating realtime agent capabilities.
Support agent demo
Demo showing a customer support agent with a human in the loop.
Build beautiful frontends with OpenAI Codex
Learn how OpenAI Codex's multimodal abilities accelerate frontend development.