An experiment in composite AI thinking began with a simple premise: submit the same prompt to three frontier models — ChatGPT ...

OpenAI launches GPT-5.5, combining reasoning with speed and efficiency. New model excels at coding, research, autonomous ...

Power users rely on these lesser-known Excel shortcuts to work faster across large datasets, formulas, and worksheets.

As PCMag's resident data journalist, I practically live in Microsoft Excel. I've learned that it's capable of far more than I ...