Codex by ChatGPT
Cloud agent that writes code, fixes bugs, and opens PRs
Visit Codex by ChatGPT →Codex is a cloud-based AI software agent built on OpenAI's Codex-1 model that handles development tasks such as writing features, fixing bugs, answering code questions, and proposing pull requests. Each task runs in a separate sandboxed environment preloaded with your repository, enabling parallel workstreams without local setup. It is designed for software developers who want to delegate routine coding tasks to an autonomous agent.
At a glance
Capabilities
Categories
Alternatives
- GitHub Copilot — AI code completion and chat assistant inside your editor
- Cursor — VS Code fork with deep AI coding and multi-file editing
For AI agents: machine-readable markdown version of this page at
/tools/codex-by-chatgpt.md,
or send Accept: text/markdown.