Master ChatGPT Agent Builder Before It’s Too Late: Dev Day Breakdown + Full Tutorial

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ChatGPT AI Agents are here. Learn to build with OpenAI Agent Builder in this complete Dev Day breakdown and step-by-step tutorial. Everything from ChatGPT Apps SDK, AI agent automation, Codex, GPT-5 Pro, Sora 2, and how to build your first AI agent without coding. This OpenAI Dev Day tutorial covers Agent Kit, building ChatGPT apps inside the platform, AI automation workflows, and the complete Agent Builder walkthrough. Watch as I build a working AI agent from scratch with no code required. Perfect for developers, automation enthusiasts, and anyone wanting to master ChatGPT AI agents and OpenAI’s latest tools.

📱 MAIN ANNOUNCEMENTS
0:00 – Intro: OpenAI Dev Day Overview
0:42 – Apps SDK: The New App Store Inside ChatGPT
1:23 – MCP Protocol & Talking to Apps Feature
1:50 – Launch Partners (Figma, Canva, Zillow)
2:30 – Monetization & Business Opportunities
3:22 – Agent Kit: Build AI Agents Without Coding

🛠️ AGENT BUILDER TUTORIAL
5:15 – Getting Started with Agent Builder
6:32 – Building the Mood DJ Agent
6:46 – Setting Up Classifier Agent
7:33 – Adding Branching Logic (If/Else)
7:54 – Creating Three DJ Agents (Happy, Sad, Stressed)
9:01 – Publishing & Testing the Agent
10:06 – Adding Interactive Widgets
10:38 – Widget Studio Demo
12:32 – Final Agent Test with Widgets

💻 OTHER MAJOR RELEASES
13:11 – Codex: AI Software Engineering Agent
14:10 – Real-World Codex Examples
15:00 – GPT-5 Pro API Launch
15:16 – GPT Realtime Mini: Voice AI
15:50 – Sora 2 in API: Video Generation
16:43 – Final Thoughts & Call to Action

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