OpenAI Expands Codex and API at DevDay with Security Scans and Ultrafast

At DevDay 2026, OpenAI announced updates: Codex gets 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 8x speed at 6x the price.

• OpenAI launches Agents API2026-09-10
• OpenAI DevDay 2026: 20+ announcements, including GPT-6 Astra2026-09-29
• OpenAI launches agentic assistant Dots2026-09-29
• OpenAI upgrades Codex with reusable cloud environments and voice CLI2026-09-29
• OpenAI seeks Codex Originals user stories2026-09-28