Everyone is a builder: Microsoft and OpenAI execs on the new era of AI-powered personal software Vijaye Raji wanted to figure out how to keep up with the firehose of Slack messages. After a couple prompts, he had a solution. Raji, OpenAI’s CTO of applications, vibe-coded his own personal tool using Codex, OpenAI’s coding agent. It runs on his laptop and summarizes his messages, emails, and notifications every 15 minutes.