OpenAI has [1]launched Codex, a powerful AI coding agent in ChatGPT that [2]autonomously handles tasks like writing features, fixing bugs, and testing code in a cloud-based environment. TechCrunch reports:

> Codex is powered by codex-1, a version of the company's o3 AI reasoning model optimized for software engineering tasks. OpenAI says codex-1 produces "cleaner" code than o3, adheres more precisely to instructions, and will iteratively run tests on its code until passing results are achieved.

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> The Codex agent runs in a sandboxed, virtual computer in the cloud. By connecting with GitHub, Codex's environment can come preloaded with your code repositories. OpenAI says the AI coding agent will take anywhere from one to 30 minutes to write simple features, fix bugs, answer questions about your codebase, and run tests, among other tasks. Codex can handle multiple software engineering tasks simultaneously, says OpenAI, and it doesn't limit users from accessing their computer and browser while it's running.

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> Codex is rolling out starting today to subscribers to ChatGPT Pro, Enterprise, and Team. OpenAI says users will have "generous access" to Codex to start, but in the coming weeks, the company will implement rate limits for the tool. Users will then have the option to purchase additional credits to use Codex, an OpenAI spokesperson tells TechCrunch. OpenAI plans to expand Codex access to ChatGPT Plus and Edu users soon.



[1] https://openai.com/index/introducing-codex/

[2] https://techcrunch.com/2025/05/16/openai-launches-codex-an-ai-coding-agent-in-chatgpt/