OpenAI officially launched its highly anticipated Sora Android version in November, quickly climbing to the top of the app charts upon release. Within 24 hours of launch, users created over 1 million videos, with a crash rate as low as 0.1%, demonstrating its strong technical capabilities.

sora

OpenAI released the development secrets of the Sora Android version on its official website. Surprisingly, 85% of the application's code was generated by GPT-5.1-Codex. The entire development process from prototype to global release took only 28 days, with the team using just four engineers for assistance, fully demonstrating the huge potential of AI in software development.

The development team did not entirely rely on AI. They first manually defined the basic parts of the application's architecture, modular design, authentication, and network requests. To ensure the quality of the generated code, they wrote example templates and used the AGENT.md document to unify standards, avoiding redundant or non-standard code generated by AI.

When facing the limitations of Codex in terms of user experience and architectural judgment, the team adopted a "plan first, then code" process to ensure that AI could accurately understand the iOS version and backend code, thus creating detailed design documents to ensure the correct direction of the development process. At the same time, Codex demonstrated its cross-platform capabilities, effectively converting Swift code from iOS into Kotlin code for Android, reducing the cost of repeated development.

This development practice proves the industry value of AI-assisted development. Although AI cannot completely replace human judgment in areas such as system architecture and user experience, it can significantly reduce the burden on engineers, allowing them to focus on more creative work, such as feature design and performance optimization.

Key Points:   

🌟 After the release of the Sora Android version, it quickly climbed to the top, generating over 1 million videos within 24 hours.   

🤖 85% of the code was generated by GPT-5.1-Codex, and the entire development took only 28 days.   

🛠️ The team manually defined the architecture and specifications to ensure code quality and development direction.