AgentsOpenAI Codex
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
- Coding agents compared: GitHub Copilot vs Claude Code vs Codex vs Gemini CLI vs Grok Build vs Cursor vs Devin
- 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, Continue vs Claude Code, Codex, GitHub Copilot
- Pick an agent for coding
OpenAI's full lineup
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Official sources
Prices change often. Confirm on the vendor's page before you buy. We're independent, and no vendor pays for placement.