OpenAI Codex

By OpenAI ยท Coding agents

About OpenAI Codex

OpenAI's coding agent, available in ChatGPT, a CLI and IDE extensions, that works on tasks in a sandbox and proposes changes.

OpenAI Codex is a coding agent from OpenAI. In ChatGPT it can take a task against a connected repository, work on it in a cloud sandbox and return a set of changes, often several tasks in parallel. There is also an open-source command-line version that runs on your own machine, and extensions for editors.

Typical uses are bug fixes, small features, test writing and answering questions about a codebase. Because cloud tasks run in an isolated environment, you review the diff and the logs before merging anything.

Check what repositories and secrets the agent can reach, how the sandbox handles network access, and which ChatGPT plans include the features your team needs. Teams often start it on backlog chores such as small bug fixes, so the review effort stays easy to judge.

Details

Nothing confirmed yet. Check the tool's own site for current plans and features.

Listing written by CodeBan, checked 2026-11-03. Report a correction or request removal. Back to coding agents.

More tools in coding agents

Claude Code

by Anthropic

Anthropic's coding agent that works in your terminal, IDE or browser, reading the codebase, editing files and running commands.

Devin

by Cognition

Autonomous software engineering agent that takes tickets, works in its own environment and opens pull requests for review.

Jules

by Google

Google's asynchronous coding agent that clones a GitHub repository, works on a task in a cloud VM and proposes a pull request.

OpenHands

by All Hands AI

Open-source platform for software development agents that can write code, run commands and browse, hosted or self-run.

  • Open source
  • Can run on your own servers or machine

Factory

Platform of AI agents, called Droids, for coding, review and incident work across a team's tools and repositories.

Junie

by JetBrains

JetBrains' coding agent that plans and carries out tasks inside JetBrains IDEs, running tests and checking its own changes.

  • Works in JetBrains IDEs