OpenAI engineers Vijaye Raji and Thibaut Sottiaux describe how AI is transforming software development at OpenAI. Engineers now orchestrate multiple AI agents in parallel via Codex Box, consuming hundreds of billions of tokens weekly. The bottleneck has shifted from writing code to clearly defining goals and understanding user needs. Roles are blurring as designers ship code and PMs test ideas. OpenAI expects another order-of-magnitude jump in development speed through networks of collaborating agents, with engineers evolving into AI team leads who set constraints and validate outputs rather than writing every line.