OpenAI expands Codex and its API at DevDay with security scans, a Decisions API, and Ultrafast At DevDay 2026, OpenAI expanded Codex with reusable cloud environments, automatic security scans for GitHub repositories, and a code review view in the desktop app, while adding Computer Use support to the Agents API and introducing a new Decisions API for fast, single decisions. OpenAI also launched the Ultrafast premium tier, which it says delivers up to eight times the speed at six times the price. At DevDay 2026, OpenAI gave Codex 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, and a new Decisions API handles fast, single decisions. The Ultrafast premium tier promises up to eight times the speed at six times the price. The article OpenAI expands Codex and its API at DevDay with security scans, a Decisions API, and Ultrafast https://the-decoder.com/openai-expands-codex-and-its-api-at-devday-with-security-scans-a-decisions-api-and-ultrafast/ appeared first on The Decoder https://the-decoder.com .