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With New Agent Mode for Excel and Word, Microsoft Touts “Vibe Working”

Agent Mode enhances Microsoft 365 Copilot in Excel and Word with advanced planning and reasoning, achieving 57.2% accuracy on SpreadsheetBench, outperforming competitors.

  • On Monday, Microsoft launched Agent Mode in Excel on the web and Word on the web through the Frontier programme for Microsoft 365 Copilot customers and Microsoft 365 Personal or Family subscribers.
  • To differentiate Office, Microsoft built Agent Mode to bring expert workflows into Copilot, using OpenAI's models to `democratize access to expert-level capabilities` and decompose complex tasks with planning, reasoning, and outcome verification.
  • SpreadsheetBench testing shows Agent Mode in Excel scored 57.2 percent accuracy, runs analyses and fixes errors with sidebar summaries, while Office Agent uses Anthropic models to create PowerPoint and Word documents for Personal and Family Frontier subscribers in the United States.
  • IT administrators must enable Copilot and apply Microsoft Purview and the Copilot Control System to manage data, while businesses require a Microsoft 365 Copilot business subscription costing $30 per user per month.
  • Adoption will hinge on user trust, accuracy of outputs and clear admin policies, requiring training and feedback loops to improve model responses for users and IT admins.
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The technological giant launched its new assistants, capable of performing all the work of a consultant in seconds.

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Computerworld broke the news in on Monday, September 29, 2025.
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