OpenAI has launched a dedicated macOS app for Codex, its coding-focused AI agent. The company says the new standalone app makes Codex more capable than its earlier form, including support for coordinating multiple AI assistants that can work in parallel on larger tasks.
Codex is positioned as a programming agent that can write code for users. With the macOS app, OpenAI says Codex can now delegate parts of a project to different models with complementary strengths, rather than trying to do everything with a single agent.
To illustrate how multi-agent collaboration can help, OpenAI shared an example where Codex was used to build a Mario Kart-like racing game. According to the company, the project included multiple playable cars, eight tracks, and powerups. OpenAI argues that producing a full game from scratch especially with all needed visual assets would be difficult for one agent, but more feasible when Codex can split the work across specialized models.
In OpenAI’s example, Codex used GPT Image to generate visual assets while a separate model coded the web game at the same time. OpenAI also says Codex took on “the roles of designer, game developer and QA tester” by validating its work through playing the game.
OpenAI is also adding features intended to make these workflows easier to use:
- Skills: A section of the app called Skills bundles “instructions, resources, and scripts” to help Codex connect to tools, run workflows, and complete tasks based on a team’s preferences. The macOS app includes an interface to create and manage Skills, and users can either request specific Skills or let Codex choose automatically depending on the task.
- Automations: A dedicated Automations section allows users to schedule tasks that run in the background. OpenAI says it has used Automations internally for repetitive but important work such as daily issue triage, finding and summarizing CI failures, generating daily release briefs, and checking for bugs.
The macOS app arrives as more companies explore what parallel AI agents can accomplish. Anysphere, the company behind Cursor, previously reported it was possible to build a working web browser from scratch using a multi-agent approach, although it encountered problems along the way.
On availability, OpenAI says Codex will be offered for a limited time to ChatGPT Free and Go users “so they can see what’s possible” with the software. The company is also doubling rates for Plus and Pro subscribers.
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