OpenAI Revamps Codex CLI and Adds Codex Cloud at DevDay 2026
OpenAI is pushing Codex off the local terminal into persistent cloud tasks, so the tool keeps working when the developer's machine does not.
Reporting from 1 source: GIGAZINE.
At OpenAI DevDay 2026 on September 29, OpenAI announced a major revamp of Codex CLI and a new cloud environment called Codex Cloud. The CLI adds scrollable history past the terminal limit, a fixed composer, the /agents, /fork, and /voice commands, activity analysis, and new themes. Codex Cloud reads GitHub, builds an environment, and gives each task its own virtual machine that keeps running when the developer's computer is asleep.
Codex CLI now loads old history as you scroll and keeps the composer fixed, so you can look back without scrolling away from the input. The /agents command shows running work and moves between tasks, /fork starts parallel sessions that inherit the same context, and /voice takes spoken instructions. Codex Cloud builds an environment from a connected GitHub repository and runs each task on its own virtual machine. Unpushed changes stay in the task, and the dependency cache survives background updates. Codex Cloud will roll out gradually to ChatGPT Plus and Pro subscribers, with Business, Enterprise, Edu, and Healthcare workspaces planned.
Synthesized by Yomimono from the 1 cited source below, including Japanese-language reporting where cited, then editorially reviewed before publishing.