1 day 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.

5 days ago - Lightweight coding agent that runs in your terminal - openai/codex

2 weeks ago - From routine pull requests to your hardest problems, Codex reliably completes tasks end to end, like building features, complex refactors, migrations, and more, powered by OpenAI’s frontier coding models.

February 9, 2026 - OpenAI Codex (AI agent), an AI agent and coding product developed by OpenAI · Category: Disambiguation pages · Search · OpenAI Codex ·

Codex is OpenAI’s coding agent for software development. ChatGPT Plus, Pro, Business, Edu, and Enterprise plans include Codex.

May 16, 2025 - They haven't been told what to think yet. Like an AI before RLHF. ... Nice, though sad to know that google will probably make this even better in less than a month. OpenAI should find a niche, doubt SWE is that. ... They will. Codex is limited to what libraries you can use.

Introducing Codex: a cloud-based software engineering agent that can work on many tasks in parallel, powered by codex-1. With Codex, developers can simultaneously deploy multiple agents to independently handle coding tasks such as writing features, answering questions about your codebase, fixing bugs, and proposing pull requests for review.

1 day ago - Codex for Open Source · Meetups · Hackathon Support · Forum · Discord · API Dashboard · Search ⌘ K · Copy PageMore page actions · Copy PageMore page actions · Meet the AI models that power Codex · gpt-5.4 · Flagship frontier model for professional work that brings the industry-leading coding capabilities of GPT-5.3-Codex together with stronger reasoning, tool use, and agentic workflows.

Extension for Visual Studio Code - Codex is a coding agent that works with you everywhere you code — included in ChatGPT Plus, Pro, Business, Edu, and Enterprise plans.

February 2, 2026 - Codex is evolving from an agent that writes code into one that uses code to get work done on your computer. With skills⁠(opens in a new window), you can easily extend Codex beyond code generation to tasks that require gathering and synthesizing information, problem-solving, writing, and more.

2 weeks ago - Codex for Open Source⁠(opens in a new window) is a program to support the maintainers behind critical open-source software.

February 12, 2026 - The Codex app is a focused desktop experience for working on Codex threads in parallel, with built-in worktree support, automations, and Git functionality.

February 5, 2026 - GPT-5.3-Codex is a Codex-native agent that pairs frontier coding performance with general reasoning to support long-horizon, real-world technical work.

February 2, 2026 - Sign up to get notified when the Codex app is available for Linux.

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

I've been experimenting with Codex for about 3 days at the time of writing. I haven't yet noticed a marked difference in the performance of the Codex model, which OpenAI explains is a descendant of GPT-3 and is proficient in more than 12 programming languages.

OpenAI Codex is an artificial intelligence model developed by OpenAI. It parses natural language and generates code in response. It is used to power GitHub Copilot, a programming autocompletion tool. Codex is a descendant of OpenAI's GPT-3 model, fine-tuned for use in programming applications.

February 2, 2026 - Open Codex and sign in with your ChatGPT account · 2 · Select a folder or git repository on your computer where Codex will work ·

Codex cloud agent⁠ launched in research preview in May, Codex has steadily evolved into a more reliable and capable coding collaborator. You can now work with it everywhere you code—in your editor, terminal, and the cloud, all connected by your ChatGPT account.

1 week ago - Open-source maintainers can apply for API credits, six months of ChatGPT Pro with Codex, and Codex Security.