On May 19th, OpenAI released a new cloud based code agent called Codex on its official website. Codex can automate various tasks for developers, such as writing functional code, answering questions about the codebase, fixing errors, and making pull requests for review; Each task runs in its own cloud sandbox environment while preloading the user’s code repository. It is reported that Codex is supported by the Codex-1 model, which is a fine tuned version of OpenAI-o3 specifically optimized for software engineering. By training real-world coding tasks in various environments through reinforcement learning, the generated code can fit the programmer’s code style and pull request preferences, and strictly follow instructions.
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