Meet the all new Codex Cloud

Summary
Craig Dennis from Developer Experience at OpenAI introduces Codex Cloud, a cloud-based development environment for OpenAI Codex tasks. He demonstrates kicking off tasks in the cloud, closing his laptop while jobs run asynchronously, interacting with tasks and providing input via mobile and voice, configuring reproducible cloud environments from repositories, and delegating review and pull-request tasks to the AI assistant Dot.

What is shown

• [00:07] Craig prompts Codex with a voice query requesting a laser animation ("...why don't you have the laser, you know, animate the answer to life?"), using the model listed in the UI as GPT-6 Astra (Extra High).
• [00:26] Craig switches the execution target to a cloud environment ("lasercube") and closes his laptop to demonstrate that tasks run independently in the cloud.
• [00:43] Monitoring the task from a smartphone, appending instructions by text ("And the universe") and voice ("And everything."), and receiving an in-flow clarifying question from the agent.
• [01:13] An in-browser laser simulation tool ("Afterimage") displaying animations including an Astra Starship, the OpenAI Blossom logo, and a blinking Codex pet.
• [01:32] Creation and configuration flow for a cloud environment from a GitHub repository (craigdennis-taic/lasercube), including automated environment onboarding, startup scripts, network access rules, and secret/environment variable management with personal override support.
• [02:37] The completed laser animation task delivers an 8-second looping animation of the number 42 at 24 fps passing 19 tests.
• [02:51] The built-in Code Review UI displaying pull requests, diffs, and validation checks.
• [03:06] Initiating an automated PR creation and test check via voice on mobile with the personal agent Dot.

Claims & numbers

• The presenter demonstrates that cloud-backed Codex tasks run asynchronously without requiring local machines to stay open or connected.
• Completed task output states: an "8-second loop at 24 fps" and "All 19 tests pass".
• Environment configuration supports reusable snapshots that eliminate repeated environment setup for the user and their team.
• Environment variables and secrets can be configured at the environment level or overridden individually per user via personal vaults.

Notable quotes

• [00:26] "I don't need to leave this open anymore because I kicked this task off in the cloud, which means I can close this bad boy and the task still runs."
• [00:44] "I can just add to the running task without interrupting, and what I love, it even allows for voice."
• [02:14] "Now, what's nice about this is it's a snapshot, so you don't ever need to do that setup over and over again like we do, right?"

Assessment
This is an official OpenAI product launch walkthrough video demonstrating Codex Cloud's core features across desktop, cloud environments, and mobile voice interfaces. The video is professionally produced with pre-scripted demonstrations and fast-forwarded background runtimes, but accurately displays the end-to-end interface flows for cloud task dispatch, environment configuration, and PR review.

Described by gemini-3.8-flash on 2026-09-30 from the video's audio and frames.