Tweet by lennysan

December 14, 2025

"I ran a startup for 5 years. I thought we moved fast. Then I joined OpenAI—and realized I had no idea what fast actually meant." Head of Product for @OpenAI's Codex @embirico and I chat about: 🔸 How OpenAI built the Sora Android app (which hit #1) in just 18 days by using Codex 🔸 Codex growing 20x since August 🔸 How they're thinking about the dev bottleneck shifting from coding to reviewing AI-generated work 🔸 Why coding will be a core competency for every AI agent—because writing code is how agents use computers best 🔸 Why the bottleneck to AGI-level productivity isn’t model capability—it’s human typing speed 🔸 The vision of Codex, and how they plan to win Listen now 👇 • YouTube: https://t.co/HGGuxeutoA • Spotify: https://t.co/iG32qAHsdW • Apple: https://t.co/wCBi3I67CP Thank you to our wonderful sponsors for supporting the podcast: 🏆 @WorkOS — Modern identity platform for B2B SaaS, free up to 1 million MAUs: https://t.co/XH3bKmeEkH 🏆 @Fin_ai — The #1 AI agent for customer service: https://t.co/gHMbsr9U6W 🏆 @Jira Product Discovery — Confidence to build the right thing: https://t.co/QdYvsx2QyU

Author
lennysan
Date
December 14, 2025
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