quickstart.md Codex Docs, 2026-03-25 18:24 UTC → 2026-04-15 06:44 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 (Apple Silicon).

39- Build a classic Snake game in this repo.35- Build a classic Snake game in this repo.

40- Find and fix bugs in my codebase with minimal, high-confidence changes.36- Find and fix bugs in my codebase with minimal, high-confidence changes.

41 37 

42 If you need more inspiration, check out the [explore section](https://developers.openai.com/codex/explore).38 If you need more inspiration, explore [Codex use cases](https://developers.openai.com/codex/use-cases).

43 If you’re new to Codex, read the [best practices guide](https://developers.openai.com/codex/learn/best-practices).39 If you’re new to Codex, read the [best practices guide](https://developers.openai.com/codex/learn/best-practices).

44 40 

45 [Learn more about the Codex app](https://developers.openai.com/codex/app)41 [Learn more about the Codex app](https://developers.openai.com/codex/app)