Episode 140: Start Building Now: OpenAI’s Laura Modiano on Apps in ChatGPT, AgentKit, Sora 2 & GPT-5-pro

This is the best time to build a startup ever. To young people thinking whether to build something: Start Now. This week on the EU-Startups Podcast, Marcin Lewandowski sits down with Laura Modiano (Startups EMEA at OpenAI) to turn her “love letter to European founders” into a build-now playbook. We break down OpenAI’s latest platform updates—Apps in ChatGPT + Apps SDK (a brand-new distribution channel), AgentKit (agents that actually do), Codex (GA) for developer speed, Sora 2 / Sora 2 Pro via API for high-ROI video, and GPT-5-pro for higher-stakes reasoning—into concrete steps founders can run today. You’ll learn: – The fastest path from idea → prototype using OpenAI’s stack (weekend-level speed) – Apps in ChatGPT: how discovery + monetization change—and what founders should prep before day one – Where AgentKit beats basic API calls (state, tools, guardrails → outcomes) – How to fold Codex (GA) into your PR flow without slowing teams – Sora 2: responsible, high-ROI uses that move real metrics – GPT-5-pro vs. cheaper models: a practical decision rubric (stakes, accuracy, latency, cost) Takeaways: – Speed is a moat: scaffold with GPT-5-pro, then optimize to cheaper models. – Don’t “add AI”—remove steps: redesign the workflow; kill clicks, not add them. – Apps in ChatGPT = new distribution: 800M weekly users; EU/UK—prep your app listing, onboarding, and pricing now. – Agents vs. endpoints: with AgentKit, combine state + tools + guardrails to deliver outcomes, not demos. – Codex (GA) ≠ novelty: pair-programming, repo refactors, doc hygiene—without slowing PR velocity. – Sora 2: use where dynamic video outperforms static—product demos, instructionals, simulations. – Europe’s edge: talent density + research depth; the bottleneck is belief + shipping cadence, not brains. Chapters: 00:00 Building in Europe: A Love Letter to Founders 05:15 Europe’s Competitive Edge 12:16 From Idea to Prototype: Leveraging OpenAI Tools 13:45 Integrating AI: Common Mistakes to Avoid 15:10 Apps in ChatGPT: Discovery, Distribution & Monetization 18:22 AgentKit: Unlocking New Possibilities 19:14 Codex (GA): Enhancing Developer Workflows 21:44 Sora 2 & GPT-5-pro: The Future of AI 25:15 AI & Jobs: A Balanced Perspective 32:01 Best Time to Build: A Call to Action 38:45 Final Thoughts: AI’s Role in Our Lives If you haven't already.... Subscribe to the EU-Startups Podcast on YouTube! Or follow along on your other favorite podcast platforms... Spotify - https://open.spotify.com/show/4QU85dN... / Apple Podcasts - https://podcasts.apple.com/ee/podcast... Follow EU-Startups on LinkedIn: / eu-startups-menlo-media Visit our Website: https://www.eu-startups.com/ Subscribe to our Newsletter: https://www.eu-startups.com/newsletter/ #startup #ai #chatgpt