The Complete OpenAI Codex Masterclass 2026

Name: The Complete OpenAI Codex Masterclass 2026
Rating: 4.6 (159 reviews)

Master OpenAI Codex, Skills and Plugins to Build AI Applications, Automate Knowledge Work, and Deploy Autonomous Agents

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Created byProf. Ryan Ahmed, PhD, MBA | 1M+ Students | #1 Best Selling AI Courses

Last updated 6/2026

English

English [Auto],

What you'll learn

Master Codex by OpenAI for building agentic AI workflows for everyday knowledge work and automation.
Master built-in Codex Skills & Plugins and build custom Codex skills and reusable workflows.
Connect Codex with tools such as Gmail, Drive, Calendar, and Canva.
Create presentations, reports, dashboards, marketing assets, and business deliverables in Canva using Codex.
Design and orchestrate multi-agent systems and operate and control them from your phone for real-time delegation.
Build real-world applications, games, and AI-powered solutions with Codex.
Automate research and browser-based workflows. Analyze data and build forecasting models with Codex.
Write effective agent prompts & master “Meta Prompting” for high-quality AI outputs.
Master Codex Agents to automate tasks in finance, legal, marketing, data analysis, & research.
Build, debug, and deploy full-stack applications and websites using Codex and its autonomous agentic capabilities.
Leverage specialized plugins to clean data, perform statistical analysis, and automatically build visual dashboards and comprehensive reports.
Automate the creation of branded PowerPoint presentations and professional executive reports directly from raw data and deep-dive research.
Master prompt engineering & context Engineering techniques to optimize Codex's output for advanced code generation, creative content, & problem-solving.
Understand the concept of "Subagents" and "Agent Teams" to handle multi-step, advanced complex projects.
Master Codex to autonomously scaffold, design, and deploy full-stack websites through terminal-based agentic orchestration and live previews.
Leverage Codex for Data Analytics and Master how to import Anthropic Skills into Codex

Course content

10 sections • 83 lectures • 11h 37m total length

Watch Codex Superpowers!5:58
Instructor Introduction & AI Agents 1016:39
Download the Masterclass Materials0:01
Masterclass Outline and Key Learning Objectives9:15
Key Success Tips1:58

Introduction to Codex7:21
Generate Branded Hero Images with Codex15:04
Generate Branded Flyers with Codex15:10
Practice Opportunity Question: Generate Branded Assets with Codex1:37
Practice Opportunity Solution: Generate Branded Assets with Codex8:35
Explore generating branded assets with Codex by building a grand opening flyer for a dog grooming business, including a hero image and markdown and html outputs.
Prompt Engineering Foundations8:22
Meta Prompting5:48

Agent Skills in Codex13:07
Master agent skills in Codex by attaching skill.md files to enable specialized tasks like PowerPoint slides, PDFs, or front-end design, with dynamic loading and reusable skill templates.
Project Overview and PPT-visual Skill8:04
Learn to build PowerPoint slide decks with Codex, first from raw data, then by installing the PPT visual skill via skill.md to create one-insight-per-slide layouts with color harmony and visuals.
Develop Slide Deck with No Skills15:15
Use Skill Installer to Install a Skill to Codex9:00
Install the ppt visual skill in Codex with the skill installer. Provide a GitHub link to the skill.md and enable the new skill to design PowerPoint slide decks.
Develop Slide Deck with Skills9:00
Equip your agent with the PowerPoint visual skill to design a PowerPoint deck from quarterly sales data across three regions, ensure quality assurance, and log errors for future accuracy.

Module Introduction: Codex Plugins8:16
Understanding the Model Context Protocol (MCP)5:28
Codex Plugins5:33
Learn how codex plugins bundle skills, connectors, and reusable workflows to empower an agent with multiple abilities and app integrations (Gmail, Google Drive, Slack, Sheets, Canva), enabling real-world tasks.
How to structure AGENTS.md in Codex9:11
Structure agents.md as a concise briefing note at the project root for Codex to read at startup, preserving context and guiding future sessions.
Connect Codex to Google Drive, Canva, and Gmail12:21
Generate AGENTS.md, Hero Images and Develop Launch Plan15:14
Generate Branded Marketing Assets in Canva10:29
Book calendar invites on Google Calendar8:14
Send Emails via Gmail with Codex6:45
Practice Opportunity Question: Codex Plugins with Canva3:37
Apply Codex to Canva, Google Drive, and Gmail to plan Tidewater’s three spring features—focus blocks, asynchronous standup, and deep calendar—and produce brand-aligned Canva assets and a test launch email.
Practice Opportunity Solution: Codex Plugins with Canva11:44
Context Window (Optional)3:44

Project Overview - Create Custom Skills in Codex9:00
Create a reusable Codex skill to enforce Elena's Casa Verde brand voice across emails, cover pages, social posts, and landing pages, using brand colors and fonts.
New Custom Skill Walkthrough8:41
Create Custom Skill in Codex and Setup AGENTS.md file16:21
Explore the Generated AGENTS.md and SKILL.md files7:04
Generate Branded Email and Cover Page9:22
Create Social Media Posts and Track Skill Drift8:59
Create social media assets using the casa verde custom skill, writing Instagram captions from image-grounded prompts and monitoring drift via a self-reflection loop and skill refinement.
Develop a Landing Page with Custom Skills4:52
Practice Opportunity Overview: Create Custom Skills in Codex3:09
Create a new brand skill in Codex for Goji Republic, capturing its voice in a skill.md, then design a landing page and promotional flyer using the brand bible.
Practice Opportunity Solution: Create Custom Skills in Codex (Part 1)10:33
Turn Goji Republic brand bible into a reusable Codex skill, using meta-prompting to generate prompts, assets, and on-brand invites, captions, and landing pages in a practice opportunity.
Practice Opportunity Solution: Create Custom Skills in Codex (Part 2)11:11

Project Overview: Perform Competitive Analysis Using Codex6:47
Automate competitive analysis with Codex, browser, and Playwright to map the sustainable design landscape in Austin. Generate an internal positioning deck, client white paper, and shareable infographic for Casa Verde.
Project Setup and Research Schema10:19
Develop the Research Framework16:02
Develop the research framework for competitive intelligence using codex, creating an agents.md contract and a research framework.md, and defining competitor discovery criteria for Casa Verde's Austin sustainable interior design landscape.
Conduct Research and Perform Competitor Analysis Using Playwright18:13
conduct research and competitor analysis using Playwright to discover five Austin firms, browse sites and social media, capture evidence, and assemble a richly sourced brief with a positioning map.
Generate Branded Slide Deck8:01
Generate Whitepaper and Infographic5:25

Introduction to Forecasting with Codex5:07
Autoregressive Integrated Moving Average (ARIMA) Model Intuition10:17
Project 1: Train an ARIMA model to predict store sales using Codex14:40
Train an ARIMA model to forecast pet store sales using Codex, with a 70/30 training/testing split, hyperparameter tuning of P, D, and Q, and forecast vs. actual visualization.
Perform Hyperparameters Tuning and Optimization with Codex7:10
Practice Opportunity Question: ARIMA and SARIMA with Codex2:08
Practice Opportunity Solution: ARIMA and SARIMA with Codex6:27
Project 2: Advanced Demand Forecasting with Codex8:50
Predict demand with codecs on a real-world retail dataset across three stores and five categories, using history and exogenous features to forecast eight weeks of units sold and revenue.
Setup the Environment & Creating a Virtual Environment7:24
Set up a forecasting project by creating an advanced forecasting folder with included datasets, configuring a virtual environment, and installing pandas, numpy, matplotlib, pmd arima, and profit.
Perform Data Visualizations and Exploration9:04
Perform exploratory data analysis on weekly sales data using Codex, read the dataset with a data dictionary, and generate visualizations including per-category line charts and discount-sensitivity plots for forecasting readiness.
Train an ARIMA, SARIMA and Prophet Models with OpenAI Codex9:39
Additional Materials: Facebook Prophet Deep Dive (Optional)4:52

Project Overview: Codex for Data Analytics10:41
Plugins in Claude Code & Cowork and Deep Dive into the Data Plugin10:21
Create a new Custom Skill in Codex from Anthropic's Data plugins13:07
Use the New Skill for Exploratory Data Analysis (EDA) and Data quality checks14:59
Create Dashboard and Data Visualizations with Codex11:06
Create branded dashboards and data visualizations with Codex using cleaned data to generate five charts and a self-contained lumen-dashboard.html showing revenue by class, attendance trends, and instructor leaderboard.
Practice Opportunity Question: Import New Skills in Codex5:05
Practice Opportunity Solution: Import New Skills in Codex11:53
Learn to import new skills into Codex by creating a local 'LinkedIn post coach' skill, then draft grounded LinkedIn posts with hooks, ctas, and hashtags from a PDF report.

Project Overview and OpenAI Developers Plugin6:42
The AI Agents Revolution and State of Agentic AI7:51
AI Agents 1013:50
Learn how AI agents plan, execute tasks, and use memory and tools to achieve goals with minimal human input, including guardrails and handoffs across a team of agents.
AI Agents Walkthrough in Action10:19
Learn how an ai agent uses an llm as a reasoning engine, with planning, tools, and memory, to autonomously act and adapt through feedback.
Model Context Protocol (MCP)4:48
AI Agentic Frameworks2:32
OpenAI Agents SDK 1014:51
Discover how the OpenAI Agents SDK enables building agentic AI applications with few primitives and an LLM-agnostic framework. Define agents, tools, handoffs, guardrails, and tracing to automate workflows.
Define and Run an AI Agent Using OpenAI Agents SDK4:53
Define and run an AI agent using the OpenAI Agents SDK, setting its name, persona, tools, handoffs, and guardrails, then execute with await runner.run.
Build a Personal Finance AI Agents with Memory - Overview3:50
Explore building a personal finance AI agent with memory using the OpenAI Agents SDK and sqlite-based session storage to recall expenses, categorize spending, and offer personalized budgeting advice.
Build a Personal Finance AI Agents with No Memory - Code Walkthrough10:35
Build a Personal Finance AI Agents with Memory - Code Walkthrough2:57
Automate Building AI Agents Using OpenAI Developers Plugin - Part 19:16
Automate Building AI Agents Using OpenAI Developers Plugin - Part 23:21
Automate Building AI Agents Using OpenAI Developers Plugin - Part 311:04
Automate building a finance advisor notebook with the OpenAI developers plugin and Codex, using GPT-5 mini and VS Code vn kernel, with no memory.
Automate Building AI Agents Using OpenAI Developers Plugin - Part 47:20

Requirements

No programming experience is required, the course is open to anyone with a laptop and internet connection!

Description

In this OpenAI Codex Masterclass, you will move beyond traditional AI chatbots and master the next generation of agentic AI workflows. You'll learn how to leverage Codex to perform research, browse the internet, generate images, build games, create presentations, build websites, analyze spreadsheets, and automate complex knowledge work using specialized AI agents. By moving beyond simple prompting, you will gain the skills to orchestrate AI systems that can execute entire projects with remarkable speed and efficiency.

This course provides a comprehensive hands-on experience designed for both technical and non-technical professionals. You will learn how to use Codex to automate tasks across business, finance, marketing, operations, and content creation while combining multiple AI agents to work together as a coordinated digital team. From creating branded logos and executive presentations to building dashboards, games, websites, and analytical reports, you will discover how to transform Codex into a powerful AI coworker capable of handling real-world professional workflows.

Throughout the course, you will master advanced prompting strategies, agent orchestration, browser-based research, image generation, and workflow automation techniques. You will learn how to create reusable skills and custom workflows that dramatically accelerate repetitive tasks and improve productivity. Whether you're analyzing financial data, preparing business presentations, building internal tools, or generating marketing assets, you'll learn how to turn AI into a fully integrated digital workforce.

By the end of this masterclass, you will be able to design and manage your own AI-powered workflows and deploy multi-agent systems for end-to-end project execution. Whether you are a startup founder pursuing the vision of a "one-person unicorn," a knowledge worker looking to automate digital labor, a creator seeking to scale content production, or a professional wanting to stay ahead in the AI economy, this course will provide the practical blueprints to do so. You will graduate with a portfolio of real-world projects and the skills needed to thrive in the emerging era of agentic AI.

Who this course is for:

AI Enthusiasts & "Vibe Coders": Transition from simple prompting to managing multi-step autonomous agents that execute tasks directly on your local system.
Startup Founders & Solopreneurs: Build MVPs in days, automate investor reporting, and run a "one-person unicorn" by orchestrating multi-agent teams with Codex.
Data Scientists & Analysts: Master agentic workflows to clean datasets, generate predictive models, and build automated dashboards without manual scripting.
Software Developers & Engineers: Learn to use Codex for autonomous debugging, repository-wide refactoring, and AI-driven full-stack application building.
Research Scientists & Academics: Leverage Codex to synthesize vast literature, manage research files, and automate the "digital labor" of scientific discovery.
Marketing & Creative Directors: Automate SEO audits, content flywheels, and "vibe marketing" campaigns by connecting Codex to your local design and media asset
Finance & Legal Professionals: Automate complex document reviews, compliance checks, and financial reporting using Codex’s native desktop agent.

The Complete OpenAI Codex Masterclass 2026

What you'll learn

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Course content

Masterclass Introduction, Outline, & Success Tips5 lectures • 24min

Get Started with OpenAI Codex & Build Your First Project7 lectures • 1hr 2min

Agent Skills in Codex5 lectures • 54min

Codex Agents Plugins12 lectures • 1hr 41min

Develop Custom Agent Skills in OpenAI Codex10 lectures • 1hr 29min

Marketing & Competitive Analysis Using Codex Playwright & Browser Plugins6 lectures • 1hr 5min

Building Games with Codex5 lectures • 46min

Forecasting with Codex11 lectures • 1hr 26min

Codex for Data Analytics7 lectures • 1hr 17min

Building Agents Using Codex OpenAI Developers Plugin15 lectures • 1hr 34min

Requirements

Description

Who this course is for: