OpenAI Codex enters ChatGPT mobile version: control desktop AI programming agent on mobile phone

Core conclusion

OpenAI announced that the Codex desktop AI programming tool can be remotely controlled through the ChatGPT mobile app (iOS/Android), covering all plans including the free version. This means developers can:

• Launch and manage Codex tasks on your phone, with results completed when you return to your computer
• Review output, approve commands, switch threads, all from your phone
• Free version can also be used (but data is involved in training), Go plan and Plus users have higher quotas

This update follows Microsoft’s announcement to cancel the Claude Code license, and the competitive landscape of the AI programming tools market is rapidly rewriting.

Key Points

• Release channel: OpenAI official announcement + HN hot post (484 points)
• Covered platforms: iOS + Android, all plans of ChatGPT App (including free version)
• Core scenario: Use your mobile phone to "remotely control" desktop Codex work when you are away from home
• Competitive background: Microsoft is replacing the internal Claude Code license with Copilot CLI

Background and trigger events

On May 17, 2026, OpenAI officially opened the Codex remote control capability in the ChatGPT mobile app. This is not a complete porting of Codex to the mobile phone, but a remote control panel on the mobile phone - you can tell the Codex Agent on the desktop what tasks to perform through the mobile phone, and then return to the computer to view the results.

Two days after this feature was launched, the HN comment area became extremely popular. Users find it very useful in the scenario of "starting a task while commuting and finishing it when arriving at the company", but some people are worried that the small screen of the mobile phone will reduce the quality of instructions.

The more critical background is: Microsoft was revealed on the same day that it will cancel most Claude Code licenses before the end of June and promote its own Copilot CLI. This means that OpenAI's Codex is becoming "the most convenient AI programming tool of choice" within the Microsoft ecosystem, while Claude Code is being marginalized.

Key Impact: How Codex Mobile is Changing AI Programming Workflows

Adaptation suggestions: How to use Codex mobile remote function

Applicable scenarios

• Commute time: Open the ChatGPT App on the subway, tell Codex "Write a Python package for this API", and run it directly at the workstation
• Break: Approval of PRs or modification suggestions generated by Codex
• Monitor long tasks: When Codex is performing big data analysis for more than 30 minutes, check the progress at any time

Not applicable scenarios

• Complex tasks that require fine-tuning of code logic
• Build the project structure for the first time (it is best to complete the skeleton on the desktop)

Technical principles

This is actually a WebSocket/SSE connection: the mobile ChatGPT App serves as the control end and is bound to the desktop Codex instance through your OpenAI account. The desktop Codex runs in its own isolated environment, and the mobile phone is only responsible for issuing instructions and previewing results.

# Codex

# macOS / Windows: ChatGPT App

# : ChatGPT App

# Codex

AI

2026 5 ，AI

Claude Code —— Copilot CLI， Claude Code OpenAI Codex。Codex ，。

• The Verge: OpenAI's Codex is now in the ChatGPT mobile app
• HN (484 )
• The Verge: Microsoft starts canceling Claude Code licenses

， tools OpenAI、ChatGPT、Codex、Claude、Claude Code、GitHub Copilot、Anthropic

Internal link guidance

• Want to get started quickly? Watch the tutorial: Claude Code automated writing practice: build an AI content production pipeline in 30 minutes
• Real monetization case: He used Claude Code + AWS to build AI SaaS, and his monthly income was $12,000 for 3 months
• Money-saving solution: Claude Code + DeepSeek V4 Building Tutorial: API Fees Dropped by 90% (15 Minutes)