Claude Code vs codex
Claude Code vs codex: install options, IDE and GitHub integrations, plugins, ChatGPT sign-in and platform support for two terminal AI coding agents.
Updated
short verdict
Pick Claude Code if you want a plugin system for custom commands and agents, a Windows install through WinGet, or @claude mentions on GitHub. Pick codex if you already pay for a ChatGPT plan and want to sign in with it, or if you want the same agent in VS Code, Cursor, Windsurf and a desktop app via `codex app`.
Both tools are AI coding agents that you drive from the terminal in natural language. The differences are in the surrounding setup: how you authenticate, where else the agent runs (IDE, GitHub, desktop), how you extend it, and how you install it. Claude Code is written in TypeScript and installs through a curl script, Homebrew or WinGet. codex is OpenAI's CLI, installs through npm or Homebrew, and signs in with a ChatGPT account or an API key.
this page is for
- Developers choosing between two terminal AI coding agents
- Teams deciding based on IDE, GitHub or desktop integration
- Readers who already have a ChatGPT plan and want to reuse it
Better pick when you want a plugin system, GitHub @claude mentions or a WinGet install on Windows.
best for
- Teams that want custom commands and agents through plugins
- Developers who delegate tasks from GitHub issues and pull requests
- Windows users who install with winget
strengths
- Plugin system adds custom commands and agents for specialized workflows
- Runs in terminals, IDEs, or through @claude mentions on GitHub
- Handles git workflows and explains code from natural-language prompts
- Installs with a curl script, `brew install --cask claude-code` or `winget install Anthropic.ClaudeCode`
weaknesses
- Collects usage data, including code acceptance/rejection feedback and conversation data
- Named IDE support is not documented, unlike codex's VS Code, Cursor and Windsurf extensions
- No desktop app mode is documented
Better pick when you want to use a ChatGPT plan and keep the same agent across CLI, IDE and desktop.
best for
- ChatGPT Plus, Pro, Business, Edu or Enterprise subscribers
- Developers who work in VS Code, Cursor or Windsurf
- Developers who install global tools with npm
strengths
- Signs in with a ChatGPT account (recommended) or an API key
- IDE extensions for VS Code, Cursor and Windsurf, plus `codex app` for a desktop app
- Runs locally and complements the web-based Codex at chatgpt.com/codex
- Installs with `npm install -g @openai/codex` or `brew install --cask codex`
weaknesses
- No plugin system for custom commands and agents is documented
- No GitHub mention integration or WinGet package is documented
- Listed platforms are macOS (Apple Silicon and Intel) and Linux (x86_64 and arm64); Windows is not listed
Key differences
- Authentication: codex signs in with a ChatGPT account or API key; Claude Code documents no sign-in method.
- Interfaces: Claude Code covers terminal, IDEs and GitHub @claude; codex covers CLI, IDE extensions and `codex app`.
- Extensibility: Claude Code has a plugin system for custom commands and agents; codex documents none.
- Install: Claude Code uses curl, Homebrew cask or WinGet; codex uses npm or Homebrew cask.
- Platforms: codex lists macOS and Linux (x86_64, arm64); Claude Code is the one with a WinGet package.
- Support: Claude Code has a `/bug` command and a Discord community; codex documents neither.
Choose Claude Code when
- You want to extend the agent with plugins that add custom commands and agents.
- You want to trigger work from GitHub by mentioning @claude.
- You develop on Windows and want `winget install Anthropic.ClaudeCode`.
- You prefer reporting issues from inside the tool with `/bug`.
Choose codex when
- You already pay for ChatGPT Plus, Pro, Business, Edu or Enterprise and want to sign in with it.
- You work in VS Code, Cursor or Windsurf and want a matching extension.
- You want a desktop app via `codex app` alongside the CLI.
- You install developer tools through npm with `npm install -g @openai/codex`.
When not to use these
- You need a fully offline workflow; neither project documents running without an account or API connection.
- You want a plain command-line utility with deterministic output rather than an AI agent.
FAQ
- Which is faster, Claude Code or codex?
- Neither project documents speed or benchmark figures, so there is no basis here to name a faster one. Try both on your own repository and compare.
- Can I use Claude Code and codex together?
- Neither project documents running them side by side, but nothing stated rules it out. They install separately: Claude Code via curl, Homebrew or WinGet, codex via npm or Homebrew.
- Which is easier to set up?
- Both install with one command, and both offer a Homebrew cask. codex also needs a ChatGPT account or an API key to sign in. Claude Code does not document its sign-in steps.
- Which one works with my IDE?
- codex documents extensions for VS Code, Cursor and Windsurf. Claude Code says it can be used in IDEs but does not name them.