Codex is a cloud-based AI software engineering agent that assists users with writing features, answering codebase questions, fixing bugs, and proposing pull requests. Powered by the codex-1 model, it employs reinforcement learning to generate code that aligns with human styles and follows project guidelines. Users interact with Codex through a sidebar in ChatGPT, issuing commands that run in isolated environments. Codex provides progress tracking, citations, and documentation of changes upon task completion, improving performance with AGENTS.md files in repositories, enhancing its ability to adhere to project standards and navigate complex tasks.
Codex assists with writing features, answering questions about codebases, fixing bugs, and proposing pull requests for review, all within individual cloud sandbox environments preloaded with user repositories.
Codex is powered by the codex-1 model, an optimized version of OpenAI's o3 designed specifically for software engineering. It was trained using reinforcement learning on real-world coding tasks.
Codex is accessible through ChatGPT's sidebar, where users can assign new coding tasks by typing a prompt and selecting 'Code,' or ask codebase-related questions with 'Ask.'
Upon completion, Codex commits changes within its environment and provides verifiable evidence through citations, terminal logs, and test outputs, allowing users to trace every step.
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