AgentsOpenAI Codex
OpenAI's coding agent, included with ChatGPT. OpenAI's coding agent: a desktop app for macOS and Windows, a CLI, IDE extensions and cloud tasks. It's included with ChatGPT plans.
✓ Last verified October 15, 2026 from official sourcesIncluded in ChatGPT Free and Go (limited trial access), Plus, Pro, Business and Enterprise. Pro comes in $100 and $200 tiers, and Business in $20 and $100 tiers, per OpenAI's Codex pricing page. Usage per 5-hour window depends on the model. You can also pay through an API key.
People who already pay for ChatGPT. Running several cloud coding tasks in parallel.
Cloud. Business and Enterprise have separate data controls. Skill level: Intermediate.
What it's great at
- Parallel cloud tasks
- Desktop app with plugins
What it can do
- Local and cloud coding tasks that share one usage allowance
- Plugins for tools like Slack, GitHub and Figma
- Check remaining limits with /status in the CLI. Credits extend usage past your plan.
Example tasks to try
- "Add input validation to the signup form and open a PR."
Start in 5 minutes
- Sign in with your ChatGPT account
- Install the Codex app or CLI
- Start with one small task and review the diff
Go to OpenAI's official page →
Watch out for
Usage limits vary by model and plan. Check /status.
Compare it
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- GitHub Copilot vs Claude Code vs Cursor vs Codex
- Claude Code vs OpenAI Codex vs GitHub Copilot
- Local vs cloud coding agents: Aider, Cline, OpenCode vs Claude Code, Codex, GitHub Copilot
- Pick an agent for coding
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Official sources
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