Summary
OpenAI’s Katia from developer experience and John, lead engineer for Sites, explain how Sites has grown from a web hosting service into a platform for personalized, collaborative web apps. John describes how the project began as a prototype for deploying internal research tools from Codex, then spread to non-engineers. Sites now hosts 8 million sites, and more than 70% of OpenAI employees have made their own.
Katia then demonstrates the workflow live. She asks Codex to turn a spreadsheet tracking DevDay launches into a launch radar app with list, board and calendar views using a shared design system, and to publish it as a site. The app was built in a few minutes. Plugins and scheduled tasks keep it current: Codex reads launch briefs from Google Drive each morning and updates the site’s built-in SQLite database without a redeploy. Scheduled tasks for Sites launch with this event.
The session also covers sharing and permissions, with viewer and editor roles for workspace members, and per-user personalization. Using existing ChatGPT connectors such as Linear, each viewer sees their own assigned tickets without extra API keys or integration code. The talk is a practical look at how prompt-built internal tools could replace slide decks, spreadsheets and bespoke dashboards.
📺 Source: OpenAI · Published November 11, 2026
🏷️ Format: Keynote Launch
