4 days ago - The best way to build with agents. Codex accelerates real engineering work, from planning and building features to refactors, reviews, and releases—working seamlessly across your tools.

ChatGPT is your AI chatbot for everyday use. Chat with the most advanced AI to explore ideas, solve problems, and learn faster.

1 week ago - Automate development tasks: Codex can run repetitive workflows such as refactoring, testing, migrations, and setup tasks so you can focus on higher-level engineering work.

During task execution, internet ... APIs, or other services. Technical teams at OpenAI have started using Codex as part of their daily toolkit....

3 days ago - ChatGPT file uploads, image and ... separate usage limits, reset periods, and banners. For example, if you see banners like “50 images in the last day”, “resets in 720 hours”, reach voice caps, or see upload-limit banners while uploading files in ChatGPT, those limits do not apply to Codex. For details on image and video limits and voice limits, see ... File Uploads FAQ. For information on the status of various ChatGPT services, including file uploads, refer to the · OpenAI status ...

5 days ago - Codex can now operate your computer alongside you, work with more of the tools and apps you use everyday, generate images, remember your preferences, learn from previous actions, and take on ongoing and repeatable work.

Codex is OpenAI’s coding agent that can read, edit, and run code. It helps you build faster, fix bugs, and understand unfamiliar code.

November 21, 2025 - Learn how to use Codex, including OpenAI Codex usage tips, limits, Codex CLI onboarding, Cursor integration, API usage, and code-generation workflows.

5 days ago - If you want Codex in your code editor (VS Code, Cursor, Windsurf), install in your IDE. If you want the desktop app experience, run codex app or visit the Codex App page. If you are looking for the cloud-based agent from OpenAI, Codex Web, go to chatgpt.com/codex.

4 days ago - All users may also run extra local tasks using an API key, with usage charged at standard API rates. Image generation counts toward the same general Codex usage limits as local messages and cloud tasks. Image generations use included limits 3-5x faster on average than similar turns without image generation, depending on image quality and size.

How OpenAI · uses Codex

3 days ago - Under this model, actual credit usage depends on the mix of input, cached input, and output tokens in each task. The table below displays credits per 1M tokens for each token type. ... Fast mode consumes 2x as many credits. Code review uses ...

2 days ago - Use Codex from Claude Code to review code or delegate tasks. - openai/codex-plugin-cc

May 17, 2025 - Learn what OpenAI's Codex is and how to use it inside ChatGPT to perform coding tasks on a GitHub repository.

4 days ago - For most tasks in Codex, start with gpt-5.4. It combines strong coding, reasoning, native computer use, and broader professional workflows in one model. Use gpt-5.4-mini when you want a faster, lower-cost option for lighter coding tasks or subagents.

February 3, 2026 - Once you downloaded and installed the Codex app, open it and sign in with your ChatGPT account or an OpenAI API key.

2 weeks ago - GPT-5.4-mini: 1,200–7,000 local messages every 5 hours. GPT-5.3-Codex: 600–3,000 local messages and 200–1,200 cloud tasks every 5 hours. Code Reviews: 400–1,000 every 5 hours.

1 day ago - ChatGPT Plus, Pro, Business, Edu, and Enterprise plans include Codex.

6 hours ago - Use Codex to navigate real codebases, make controlled changes, codify repeatable work, and keep production quality high.