Three months after Anthropic shipped remote monitoring for Claudee Code](/tools/claude-code/), OpenAI is adding the same capability to Codex - now available on iOS and Android in preview for all ChatGPT subscribers.
The mobile integration lives inside the ChatGPT app rather than as a standalone tool. From your phone you can monitor active Codex sessions, review outputs, approve pending commands, switch between AI models, and kick off new tasks. OpenAI described the scope directly: "From your phone, you can work across all of your threads, review outputs, approve commands, change models, or start something new."
For anyone running Codex on longer jobs, the monitoring piece matters more than it might seem at first. Codex is an AI coding agent - it autonomously executes multi-step coding work in a sandboxed environment rather than just answering questions. That means it might spend an hour rewriting a module or scaffolding a feature while you step away. Until now, checking in or redirecting a running session meant staying at your desk. Mobile access changes that.
This is the third significant Codex expansion in about six weeks. OpenAI added desktop background execution in April 2026 and launched a Chrome extension for browser session integration earlier this month. The pattern is consistent: the team is building toward a version of Codex that runs continuously across whatever device you happen to be using.
Anthropics's Claude Code got its own remote monitoring feature - called "Remote Control" - back in February 2026, giving users a comparable way to steer long-running coding sessions from anywhere. Both tools are competing for the same audience: developers and technical teams who want to hand off multi-hour coding work to an AI agent without staying glued to a single screen.
The preview is available on both platforms at no additional cost beyond an existing ChatGPT subscription.