Codex cloud: OpenAI's agent keeps working with your laptop closed
Codex cloud saves your repo, dependencies and permissions and keeps working with the laptop closed. What it does, its no-browser limit and what's unknown.
Codex cloud is the cloud environments for OpenAI's coding agent, introduced at the September 29, 2026 DevDay: you close your laptop and the agent keeps working. The environment is saved with your repo, dependencies and permissions, and you can pick the task back up from your phone. Its limit: in the cloud, neither the browser nor computer use works.
What Codex cloud is
A Codex cloud environment is a cloud space where the coding agent runs your tasks without depending on your laptop. A task that runs on its own shouldn't depend on your machine being on. According to OpenAI, these environments are now arriving in ChatGPT.
What it can do
- Keep going with the laptop closed and resume the task from your phone.
- Save your repo, dependencies and permissions, so nobody sets up the environment again.
- Keep its state: according to the documentation, roughly 7 days.
The limit of Codex cloud
In cloud environments, computer use and browser automation don't work. In other words, Codex cloud can't drive a browser or the computer. For this kind of agent, the advantage is reviewing the result instead of watching the task while it runs.
What isn't known
The rollout is gradual. There are no published prices or usage limits, and which plans include it comes from press, not OpenAI. Nor should you assume the state lasts exactly seven days: the documentation says "approximately". And on GitLab, some reports say it doesn't work, while OpenAI's documentation says it supports GitHub and GitLab.
How to apply it in your business?
Think of long tasks that today force you to leave your laptop open: migrations, tests, refactors. They're good candidates to leave running overnight and review in the morning. Start with a low-risk task, review what it did and adjust your permissions. If you're interested in agents that keep working, also look at ChatGPT dots, OpenAI's always-on agents.
Frequently asked questions
What is Codex cloud?
The cloud environments of Codex, OpenAI's coding agent, which keep working with your laptop closed.
How long does the environment state last?
According to the documentation, roughly 7 days.
Can Codex cloud use a browser?
No. In cloud environments, computer use and browser automation don't work.
How much does Codex cloud cost?
There are no published prices or usage limits.
Can I resume a task from my phone?
Yes, the task can be resumed from your phone.
Conclusion
Codex cloud removes the dependence on your laptop: the agent keeps going, you review the result. It has a clear limit, no browser or computer, and prices and the full rollout are still to come. Save it for when you leave a long task running overnight.