OpenAI DevDay: Dots, Agents & $100B Opportunities

I watched almost 60 minutes of Sam Altman on stage at OpenAI Dev Day 2026. Out of 20-plus launches, I pick the three or four that I think can make people billions of dollars in aggregate. I break down Dots, OpenAI's personal agent platform, plus the Decisions API, the Agents API with computer use, and Sign in with ChatGPT. I also share my four-step framework for building in this world and two business ideas I hope someone takes. If you want to build a business and make money around AI, this episode is for you. Timestamps 00:00 – Intro 01:48 – Dots, the Personal Agent Platform 03:29 – OpenAI Doubles Down on Plugins 05:02 – Decisions API 06:43 – Agents API With Computer Use 08:01 – Sign In With ChatGPT 12:36 – Where should you build? 13:46 – Idea: Real-World Work APIs 15:04 – Idea: Analytics for Agent Discovery 17:05 –Closing Thoughts Key Points • Dots gives plugin builders a front door to 1.2 billion weekly active users. • OpenAI is doubling down on plugins to make ChatGPT the app ecosystem for AI. • Sign in with ChatGPT lets users bring their current plan, so a free core app with paid upsells now works. • Workflows too niche for OpenAI to build become viable businesses. • The strongest businesses in this world own the trigger, the action, and the feedback. • Two open opportunities: real-world work APIs and an analytics layer for agent discovery Numbered Section Summaries 1. The Launches Worth Your Attention OpenAI shipped 20-plus features at Dev Day 2026, and I focus on four: Dots, the Decisions API, the Agents API, and Sign in with ChatGPT. I cover GPT 6.1 Soul, Ultrafast, Private Intelligence, and Spaces briefly at the end. 2. Dots and the Plugin Comeback Dots is OpenAI's answer to Muse by Meta and Instinct. A user asks for help, like fixing a permit or finding a restaurant, ChatGPT understands the job, and it selects a plugin,…