OpenAI expands Codex and API at DevDay with security scanning, Decisions API, Ultrafast

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

At DevDay 2026 in San Francisco, OpenAI announced expansions to Codex and its API: Codex gains reusable cloud development environments and Codex Security Cloud repository vulnerability scanning, the ChatGPT desktop app adds a code review view, and Codex CLI supports voice launch and an /agents view.

Why it matters: It lays out the Codex and Agents API updates from DevDay, a basis for judging how agentic coding and security scanning will land.