The big headlines on this release are efficiency, with OpenAI reporting that GPT-5.4 uses far fewer tokens (47% fewer on some ...

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

Error logs and GitHub pull requests hint at GPT-5.4 quietly rolling out in Codex, signaling faster iteration cycles and continuous AI model deployment.

At the start of February, OpenAI upgraded its Codex coding app to give it the ability to manage multiple AI agents. At the ...

OpenAI's new GPT-5.4 clobbers humans on pro-level work in tests - by 83% ...

OpenAI has rolled out GPT-5.4 (Thinking) and GPT-5.4 Pro across ChatGPT, its API and Codex, introducing improvements in ...

OpenAI GPT-5.4 is rumored after a Codex demo leak; GPT-5.3 is already in Codex, raising release timing questions.

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

OpenAI has introduced GPT-5.4, the latest upgrade powering ChatGPT with a new “Thinking Mode,” better reasoning, and integrations with Microsoft Excel and Google Sheets. The update aims to improve ...

GPT-5.3-Codex moved to No. 1 in Quality on the Microsoft Foundry AI Model Leaderboard soon after release, while a cross-metric 'podium' scoring method put GPT-5-Nano on top overall for efficiency.