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 table formulas shift from cell positions to named columns with #All-style tags, keeping calculations readable when layouts change.

To fix the Excel error, There's a problem with this formula in Windows, check for unmatched or missing parentheses & ensure the function syntax is correct dirst.

Prevent broken formulas using tables, validation rules, separate worksheets, named variables, and the power of LAMBDA.

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

Overview:Excel books support long-term learning compared to short tutorials that explain quick data-centric tasks.Books ...

OpenAI is bringing ChatGPT directly into spreadsheets. The new Excel add-in lets users analyse data, build models and run scenarios using simple prompts, with Google Sheets support expected soon.

OpenAI integrates Excel support and live financial data into ChatGPT, creating a powerful spreadsheet co-pilot for traders, analysts, and crypto investors.

Protect your data integrity by using Excel formulas to "lock" checkboxes so they only tick when specific conditions are met.

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

Long reserved for advanced offerings, Claude in Excel is now becoming accessible to subscribers of Anthropic’s Pro plan, ...

Dark Mode has its drawbacks. For example, the worksheet grid usually remains white. You can choose Black under Office Theme, which activates a Dark Mode toggle in the View tab of your Excel ribbon.