US EditionOpenAI Introduces Codex, Its First Full-Fledged AI Agent for Coding
- On May 16, 2025, OpenAI introduced a research preview of Codex, its advanced AI coding assistant, initially accessible to subscribers of ChatGPT’s Pro, Enterprise, and Team plans.
- OpenAI developed Codex based on its codex-1 model, a fine-tuned o3 reasoning variant optimized by reinforcement learning for software engineering tasks.
- Codex runs tasks in isolated cloud containers preloaded with users' code from GitHub and can simultaneously write, debug, and test code with iterative verification.
- OpenAI states Codex completes tasks in one to 30 minutes, offers 'generous access' initially, and users may purchase extra credits after planned rate limits go into effect.
- The rollout of Codex marks OpenAI's strategy to enhance developer productivity amid rising AI coding tool competition, aiming to transform how engineers delegate programming tasks.
25 Articles
25 Articles
OpenAI’s new agent tool Codex is for developers, but it can also help you order takeout
Sam Altman’s OpenAI launches Codex, an AI tool to write codes and fix bugs for developers. Jonathan Ernst/REUTERS OpenAI on Friday rolled out a powerful new tool for software developers, as the company pushes further into automating coding tasks with AI. The new product, called Codex, is an AI agent designed to help programmers write code, fix bugs, and run tests — often simultaneously. “Technical teams at OpenAI have started using Codex as part…
OpenAI introduces Codex, its first full-fledged AI agent for coding
We've been expecting it for a while, and now it's here: OpenAI has introduced an agentic coding tool called Codex in research preview. The tool is meant to allow experienced developers to delegate rote and relatively simple programming tasks to an AI agent that will generate production-ready code and show its work along the way. Codex is a unique interface (not to be confused with the Codex CLI tool introduced by OpenAI last month) that can be r…
ChatGPT is getting an AI coding agent
OpenAI's next "low-key research preview" has arrived. This time, it's not ChatGPT, but a coding agent dubbed Codex that is being made available to ChatGPT Pro, Enterprise, and Team subscribers starting Friday. By drumming up comparisons to how ChatGPT was first described, CEO Sam Altman and other company leaders are positioning Codex as the company's next major product. It doesn't cost extra to use for now, though OpenAI plans to eventually char…
OpenAI Launches an Agentic, Web-Based Coding Tool - Overpasses For America
OpenAI is launching a cloud-based software engineering agent called Codex in an attempt to ride a wave of hype surrounding vibe coding or building software using AI. It says this tool will let developers automate more of their work in a way that should be both safer and less opaque than existing tools. OpenAI’s Codex is available through the web for ChatGPT Pro users from today. It can generate lines of code but also move through directories and…
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