OpenAI Codex emergency upgrade: autonomously control the desktop in the background and compete head-on with Anthropic

Core conclusion

OpenAI urgently upgraded Codex on April 17, 2026, giving its background the ability to autonomously control the desktop and support the parallel operation of multiple agents. This move directly targets Anthropic's Claude Code, marking a new stage of competition between the two AI giants in the coding tool market.

Background and trigger events

• Time of incident: April 17, 2026 (Thursday)
• Channel where the incident occurred: OpenAI official blog and TechCrunch reports
• Main Players: OpenAI, Anthropic, Claude Code

Event highlights

• Background autonomous control: Codex can run in the background of your Mac, open any application and perform operations by clicking and typing the cursor
• Multi-Agent Parallel: Supports multiple agents working at the same time without interfering with each other
• 111 plug-in integrations: Integrate CodeRabbit, GitLab Issues, Slack, Google Calendar and other tools
• Pay as you go: Launch a flexible billing plan for ChatGPT enterprise/commercial customers

Technical details

• Product/Version: OpenAI Codex (new backend agent architecture)
• Core Function Update:
  • Background desktop control (open applications, perform operations)
  • Multi-agent parallel processing
  • In-app browser (front-end/game development scenario)
  • Memory function (context maintained across sessions)
  • Image generation (product concept, PPT mockup)
  • 111 plug-ins integrated
• Availability: For ChatGPT enterprise and commercial customers, pay-as-you-go model

Industry reaction

• Developer Community: Claude Code has become the coding tool of choice for many companies, and OpenAI’s upgrade is intended to regain lost ground.
• Competitors: Anthropic announced last month that Claude and Cowork can remotely control users' Mac/desktop
• Market landscape: The low-intensity war between OpenAI and Anthropic continues to heat up, with both companies increasing investment in the enterprise

Potential Impact

• Technology Ecosystem: AI coding tools evolve from a single assistant to a multi-agent collaboration platform
• For developers: Backend automation capabilities will significantly improve development efficiency and reduce manual repetitive operations.
• To the market: Coding tool competition has shifted from functional competition to workflow integration capabilities, and the plug-in ecosystem has become a key battlefield.