ToolsThe story, in brief
How We Used Codex to Ship Sora for Android in 28 Days
28 days. That's how long it took OpenAI to ship Sora on Android—using Codex to automate the build itself.
The KeyNews take
Why it matters
OpenAI demonstrates internal AI-assisted development as a competitive advantage, shipping a major product feature in record time. For founders and CTOs, this signals that AI-powered coding tools aren't just for external users—they're reshaping internal velocity and deployment timelines.
The key facts
4 to knowSora shipped to Android in 28 days
Codex used for AI-assisted planning, translation, and parallel coding workflows
Internal use case: OpenAI dogfooding its own developer tools
Published Dec 12, 2025
Go to the source
OpenAI Blogopenai.com
Publisher excerpt: OpenAI shipped Sora for Android in 28 days using Codex. AI-assisted planning, translation, and parallel coding workflows helped a nimble team deliver rapid, reliable development.