quickstart.md Codex Docs, 2026-03-07 18:10 UTC → 2026-05-02 00:48 UTC

1# Quickstart1# Quickstart

2 2 

3ChatGPT Plus, Pro, Business, Edu, and Enterprise plans include Codex. Using Codex with your ChatGPT subscription gives you access to the latest Codex models and features.3Every ChatGPT plan includes Codex.

4 4 

5You can also use Codex with API credits by signing in with an OpenAI API key.5You can also use Codex with API credits by signing in with an OpenAI API key.

6 6 

7For a limited time, **try Codex for free in ChatGPT Free and Go**, or enjoy

8**2x Codex rate limits** with Plus, Pro, Business and Enterprise

9subscriptions.

10 

11## Setup7## Setup

12 8 

13The Codex app is available on macOS (Apple Silicon).9The Codex app is available on macOS and Windows.

10 

11Most Codex app features are available on both platforms. Platform-specific

12exceptions are noted in the relevant docs.

14 13 

151. Download and install the Codex app141. Download and install the Codex app

16 15 

17 Download the Codex app for Windows or macOS.16 Download the Codex app for macOS or Windows. Choose the Intel build if you're using an Intel-based Mac.

17 

18 [Download for macOS (Apple Silicon)](https://persistent.oaistatic.com/codex-app-prod/Codex.dmg)[Download for macOS (Intel)](https://persistent.oaistatic.com/codex-app-prod/Codex-latest-x64.dmg)

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19 [Download for macOS](https://persistent.oaistatic.com/codex-app-prod/Codex.dmg)20 Need a different operating system?

21 

22 [Download for Windows](https://get.microsoft.com/installer/download/9PLM9XGG6VKS?cid=website_cta_psi)

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21 [Get notified for Linux](https://openai.com/form/codex-app/)24 [Get notified for Linux](https://openai.com/form/codex-app/)

222. Open Codex and sign in252. Open Codex and sign in

40- Build a classic Snake game in this repo.42- Build a classic Snake game in this repo.

41- Find and fix bugs in my codebase with minimal, high-confidence changes.43- Find and fix bugs in my codebase with minimal, high-confidence changes.

42 44 

43 If you need more inspiration, check out the [explore section](https://developers.openai.com/codex/explore).45 If you need more inspiration, explore [Codex use cases](https://developers.openai.com/codex/use-cases).

44 46 If you’re new to Codex, read the [best practices guide](https://developers.openai.com/codex/learn/best-practices).

45 [Learn more about the Codex app](https://developers.openai.com/codex/app)

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47Install the Codex extension for your IDE.48Install the Codex extension for your IDE.

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694. Use Git checkpoints704. Use Git checkpoints

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71 Codex can modify your codebase, so consider creating Git checkpoints before and after each task so you can easily revert changes if needed.72 Codex can modify your codebase, so consider creating Git checkpoints before and after each task so you can easily revert changes if needed.

73 If you’re new to Codex, read the [best practices guide](https://developers.openai.com/codex/learn/best-practices).

72 74 

73 [Learn more about the Codex IDE extension](https://developers.openai.com/codex/ide)75 [Learn more about the Codex IDE extension](https://developers.openai.com/codex/ide)

74 76 

1004. Use Git checkpoints1024. Use Git checkpoints

101 103 

102 Codex can modify your codebase, so consider creating Git checkpoints before and after each task so you can easily revert changes if needed.104 Codex can modify your codebase, so consider creating Git checkpoints before and after each task so you can easily revert changes if needed.

105 If you’re new to Codex, read the [best practices guide](https://developers.openai.com/codex/learn/best-practices).

103 106 

104[Learn more about the Codex CLI](https://developers.openai.com/codex/cli)107[Learn more about the Codex CLI](https://developers.openai.com/codex/cli)

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130 ```133 ```

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132 [Learn more about Codex cloud](https://developers.openai.com/codex/cloud)135 [Learn more about Codex cloud](https://developers.openai.com/codex/cloud)

136 

137## Next steps

138 

139[Learn more about the Codex app

140 

141Use the Codex app to work with your local projects.](https://developers.openai.com/codex/app)

142[Migrate to Codex

143 

144 Move supported instruction files, MCP server configuration, skills, and

145subagents into Codex.](https://developers.openai.com/codex/migrate)