OpenAI launches GPT-5.4 across ChatGPT, API, and Codex with stronger reasoning, coding, and computer use capabilities.

GPT-5.4 is also more reliable, producing 18% fewer errors and 33% fewer false claims than GPT-5.2, according to OpenAI.

OpenAI today released the Codex app for Windows, powered by OpenAI’s frontier coding models, and it’s now the only coding agent with a first-class Windows experience.

OpenAI has released its Codex desktop app for Windows, adding a native sandbox and PowerShell support, enabling developers to run parallel coding agents.

OpenAI teases “5.4” as reports point to a 1M+ token context window and “extreme reasoning,” amid scrutiny over its Pentagon deal.

Controversy over OpenAI's agreement to provide AI to the Pentagon has swamped news about Codex's rapid adoption ...

In a post on X (formerly known as Twitter), the AI giant announced that the Codex app is now available on Windows, adding, “Get the full Codex app experience on Windows with a native agent sandbox and ...

OpenAI launches Codex for Windows, letting developers run multiple AI coding agents, automate testing tasks, and sync projects seamlessly across Mac and Windows.

OpenAI upgrades Prism with Codex CLI and GPT-5.3, letting researchers run code, compile LaTeX, and refine papers inside one workspace.

OpenAI has launched its Codex app on Windows, bringing a native AI coding assistant with project management, automations, and WSL support for developers.

OpenAI releases Codex for Windows and open-sources its agent sandbox to keep AI coding tasks safely contained.

A repository platform built around AI models could reshape developer workflows and reduce OpenAI’s reliance on Microsoft’s ...