OpenAI expands Codex to mobile

OpenAI said on May 14 that Codex is rolling out in preview to the ChatGPT mobile app on iOS and Android, extending its coding agent from desktop and web into phones. The company said the mobile version lets users review outputs, approve commands, change direction and start new work while Codex continues running on a connected machine. OpenAI’s release notes said the rollout covers supported regions and spans ChatGPT plans including Free and Go. OpenAI also updated ChatGPT Business documentation this week with new billing and control pages covering Codex credits, auto-top-ups, usage analytics and spend controls. ### What can people actually do from the phone? OpenAI’s May 14 product post said the mobile app is a “fully-featured mobile experience” for Codex rather than a simple remote trigger. The company said users can work across active threads, review outputs, approve commands, switch models and start new tasks from the phone while files, credentials and permissions remain on the machine where Codex is operating. (openai.com) The ChatGPT release notes said the phone view can surface project context, approvals, plugins, screenshots, terminal output, diffs and test results from the connected environment. OpenAI’s community post described the feature as rolling out that day on iOS and Android, with Codex continuing to run on a laptop, Mac mini or devbox. (openai.com) ### Which machines and plans does this support now? OpenAI’s Codex changelog said on May 14 that users can connect the ChatGPT mobile app to a Mac running the Codex app. The same changelog entry framed the release as a way to use Codex from the mobile app by linking to that host machine. The ChatGPT release notes said the rollout is across all plans, including Free and Go, in supported regions, and told users to update both the ChatGPT mobile app and the Codex app on macOS. (help.openai.com) OpenAI’s help article on using Codex with a ChatGPT plan said Codex is included with Plus, Pro, Business and Enterprise/Edu, and for a limited time with Free. (developers.openai.com) The OpenAI community announcement added one concrete next step: support for connecting a phone to the Codex app on Windows is “coming soon.” OpenAI did not give a date for that release in the materials reviewed. ### What changed for ChatGPT Business administrators? OpenAI’s help center now has a dedicated article on “Managing credits and spend controls in ChatGPT Business” for Codex usage. (help.openai.com) The page says administrators can add credits, set auto-top-up rules, review usage analytics and use spend controls tied to Codex activity. (community.openai.com) A separate ChatGPT Business billing article says the self-serve plan uses standard ChatGPT seats and usage-based Codex seats, with centralized billing for the workspace. The Business FAQ says the product is a self-serve workspace for teams with admin controls and seat-based access to ChatGPT and or Codex depending on seat type. (help.openai.com) OpenAI’s consumer credits article also says credits are a pay-as-you-go add-on for Codex when users need usage beyond plan limits. For Business customers, the new documentation places that usage alongside admin controls rather than leaving it only as an end-user setting. ### How large is Codex now, according to OpenAI? (help.openai.com) OpenAI said in its May 14 product post that more than 4 million people use Codex every week. The company used that figure to explain why quick check-ins, approvals and course corrections from a phone matter as coding tasks run for longer periods. OpenAI’s broader Codex materials describe the product as a coding agent that works across terminal, IDE, web, GitHub and ChatGPT surfaces. (help.openai.com) A later OpenAI product page said Codex now works in the ChatGPT iOS app as part of a unified experience tied to a ChatGPT account. ### Where are the official details now? OpenAI’s product post, ChatGPT release notes, Codex changelog and Help Center pages now split the story across feature, setup and billing documents. (openai.com) The product post covers the mobile workflow, the release notes cover rollout and plan availability, and the Business help pages cover credits, seats and spend controls. (openai.com) OpenAI’s next documented milestone is Windows phone connectivity, which the company said is coming soon in the May 14 community post. Until then, the current setup instructions point users to the ChatGPT mobile app and the Codex app on macOS, while Business administrators can use the Help Center pages updated this week to manage seats, credits and spending. (community.openai.com) (openai.com)