Microsoft Copilot models show cost gap and new SharePoint‑based agent features

A recent analysis of Microsoft Copilot’s Copilot Cowork service found that the newer Fable 5 model consumes 1,738.4 service credits for a standard workflow, while the older Sonnet 5 uses only 912.2 credits, creating an 826‑credit cost gap for identical outputs such as an HTML dashboard, PowerPoint deck, Word summary and drafted email. The visual differences were modest, with Fable 5 adding a sticky header and slightly richer colors, prompting users to weigh aesthetic gains against higher expense.

In parallel, Microsoft unveiled Copilot Studio’s ability to create agents grounded in SharePoint list data. These agents can answer natural‑language queries, return tabular results, generate Excel sheets, and respond to emails using the list as knowledge source. A detailed walkthrough demonstrates a car‑dealership inventory agent that searches a SharePoint list for vehicles, applies filtering and sorting rules, and formats single‑item and multi‑item responses according to predefined instructions.