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.

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

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

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 ...

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

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.

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.