OpenAI turns Codex into an always-on coding agent that watches your screen

THE DECODER / 4/17/2026

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OpenAI is upgrading its Codex developer tool so it can autonomously control a Mac, not just assist with code generation.
The updated Codex can also generate images, retain user preferences, and continue executing tasks over long periods (for weeks) without constant prompts.
OpenAI frames the expansion as competing directly with Anthropic’s Claude Code, targeting a similar “agent” workflow.
The changes position Codex as a more always-on, end-to-end coding agent that can monitor and act within the developer’s environment.

OpenAI is massively expanding its developer tool Codex: the AI can now control a Mac on its own, generate images, remember preferences, and keep working on tasks autonomously for weeks. The move takes direct aim at Anthropic's Claude Code.

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