The Codex rollout came after OpenAI launched GPT-4.5 in February. A livestream demo highlighted its improved reasoning, intuition, and reduced hallucinations.

All ChatGPT users -- yes, even free -- can access GPT-5 in ChatGPT. For a roundup of what to expect, keep reading below.

OpenAI announced on Friday it’s launching a research preview of Codex, the company’s most capable AI coding agent yet. Codex is powered by codex-1, a version of the company’s o3 AI reasoning ...

openai OpenAI launches Codex, a new AI coding agent for software development Cisco, Temporal, Superhuman, and Kodiak are among the first companies to test Codex By Skye Jacobs May 18, 2025 at 11:23 AM ...

OpenAI is also rolling out updates to Codex CLI, its lightweight terminal agent for local development. The CLI now uses a smaller model—codex-mini-latest—optimized for low-latency editing and Q&A.

OpenAI has announced the release of Codex, an AI coding agent it said was designed to help software engineers write code, fix bugs, and run tests. According to the company, Codex is powered by ...

OpenAI's announcement post about Codex is filled with objection handling to tackle the common refrains against AI coding agents; based on older tools and models, many developers accurately point ...

Early on Friday, OpenAI revealed a preview of Codex, the company's stab at a specialty coding "agent" — a fluffy industry term that seems to change definitions depending on which company is ...

OpenAI has launched Codex, a research preview of a cloud-based software engineering agent designed to automate common development tasks such as writing code, debugging, testing, and generating pull re ...

OpenAI today debuted a new artificial intelligence agent, Codex, that can help developers write code and fix bugs. The tool is available through a sidebar in ChatGPT’s interface.

OpenAI launched a research preview on Friday of what it’s calling its most capable AI coding agent yet. Codex, a cloud-based software engineering agent, can write features, answer questions ...

In the Codex release, OpenAI claims its coding agent operates entirely in the cloud, cut off from the internet, meaning it can't scour the web for data like ChatGPT.