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

Excel automations cover auto-updating charts, deadline flags, and smart links; Ctrl+T table charts expand as new rows appear.

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 released GPT-5.4 in ChatGPT (as GPT-5.4 Thinking), the API, and Codex, calling it its most capable and efficient ...

ChatGPT is now using its 5.4 Thinking model for deeper reasoning, and it's even better at handling "professional work." ...

From OpenAI’s expanding dominance to sweeping security incidents and corporate realignments, this week underscored how AI ...

OpenAI has launched GPT-5.4, a highly efficient AI model designed for professional tasks, boasting significant accuracy improvements and a new tool search feature.

OpenAI's GPT-5.4 debuts with financial tools, FactSet integration, Excel support, and investment analysis features for ChatGPT Plus, Team, and Pro users.

OpenAI’s GPT-5.4 is here. It’s designed to be thoughtful and easier to steer in the right direction.

The ChatGPT Thinking version features a new interaction style, where the model first displays an upfront plan of its reasoning process.