OpenAI expands Codex and its API at DevDay with security scans, a Decisions API, and Ultrafast

At DevDay 2026, OpenAI introduced reusable cloud environments, automatic security scans for GitHub repositories, and a code review view in the desktop app. The Agents API now supports Computer Use, while the new Decisions API handles fast, single decisions. Additionally, the Ultrafast premium tier promises speeds up to eight times faster at six times the price. These enhancements to Codex and the API demonstrate OpenAI's commitment to improving security and efficiency in software development. Such developments could significantly enhance the developer experience and streamline their daily operations.