app · OpenAI
Codex
Codex is OpenAI's agentic coding tool — a terminal agent (plus a VS Code extension and managed cloud tasks) that reads your repository, edits files, runs commands, and iterates on test failures until they pass. The CLI is open source (Rust) and runs locally in your own checkout, so your code stays on your machine; the models behind it are OpenAI's frontier models, billed through a paid ChatGPT plan or API credits. For a biology student it shines at refactoring a messy analysis script, adding a feature to a lab tool, or debugging a failing notebook end-to-end.
What it can help with
- terminal coding
- repo editing
- test automation
- local execution
- rust cli
- vs code integration
- code refactoring
- debugging notebooks