Users Discover Undocumented ChatGPT Remote Control for Driving Codex from Phones

Multiple users on Reddit have discovered and verified an undocumented "Remote Control" feature in ChatGPT/Codex: ChatGPT Desktop supports SSH connections, the mobile app can join remote SSH sessions, and Codex experiments can even run on a remote GPU slurm cluster. The feature currently works but has pitfalls around connection methods and file permissions, and OpenAI has yet to provide documentation or an official explanation—something heavy Codex users should watch.

Confirmed

• TheZachMueller, benjaminwarner, and others relayed that the feature appears nowhere in official docs; you start it by running codex remote-control start on the target server, then connect from the phone.
• alexisgallagher tested it: ChatGPT on iOS and macOS can directly control a Codex session running on a Linux machine, and the mobile app gets the exact same native session as local, an experience better than blink+ssh.
• antoinechaffin added from practice: remote connections currently can only be set up through code, and doing so creates file permission conflicts between the phone and laptop.

Not yet confirmed

• Whether the feature is an intentionally reserved official capability or will later be documented—no information available.
• Beyond permission conflicts, whether other limitations or stability issues exist is unknown due to lack of further testing.

Why it matters

• It extends Codex beyond the desktop to phones and remote compute clusters, especially useful for researchers and developers running long experiments on GPU clusters.
• The lack of public documentation means the feature could change at any time; early adopters should watch for pitfalls like permission conflicts, and it also hints at possible undisclosed OpenAI plans around remote/mobile workflows.

2026-09-07 ~ 2026-09-07 · 8 related posts

• ChatGPT iOS remote control works with Codex sessions on Linux, beats blink+ssh — alexisgallagher · 2026-09-07
• [source] You don't need a macOS relay: pairing Codex CLI remote control directly from Linux — alexisgallagher · 2026-09-07
• [source] Codex Remote-Controls From Phone Without Desktop Session, Via Token Pairing — viksit · 2026-09-07
• Codex Remote Without Desktop: Tailscale SSH Setup in 5 Minutes on Ubuntu — kwindla · 2026-09-07
• Undocumented Codex 'remote-control' feature lets you drive GPU clusters from your phone — iScienceLuvr · 2026-09-07
• Undocumented ChatGPT Mobile "Remote Control" Lets You Run Codex Over SSH — benjamin_warner · 2026-09-07
• [source] Hidden ChatGPT/Codex feature lets you run coding agents on a GPU cluster from your phone — TheZachMueller · 2026-09-07
• ChatGPT mobile can pair with remote SSH, but file permission conflicts remain a pain — antoine_chaffin · 2026-09-07