"Vibe working" was Microsoft's marketing phrase for it. The actual feature, now rolling out, is called Agent Mode - and it's landing in Word, Excel, and PowerPoint this week.
Agent Mode is a more capable version of the Copilot assistant Microsoft has been selling to business customers. Where standard Copilot responds to single prompts (draft this email, summarize this document), Agent Mode handles multi-step tasks autonomously. You describe what you want done, and the agent works through a sequence of actions to complete it without you guiding each step.
The distinction matters in practice. A standard Copilot prompt produces a draft or a chart. An agent can, in theory, pull data from multiple sources, analyze it, build a presentation around the findings, and flag anomalies - all from one instruction. Microsoft acknowledged the shift directly: "When we first shipped Copilot, foundation models [were not capable of this]."
Who This Actually Affects
Agent Mode is for Microsoft 365 business subscribers, not personal plan users. Consumer Copilot is not part of this rollout.
For business users, the real question is whether Agent Mode delivers on a promise the first round of Copilot largely failed to keep. When Microsoft launched Copilot for Microsoft 365 in 2023 at $30 per user per month, the reception was mixed - impressive in demos, inconsistent in daily use. Autonomous task execution is Microsoft's attempt to close that gap.
For teams running standalone AI writing tools like Copy.ai alongside their Office subscriptions, Agent Mode is the closest Microsoft has come to making those workflows native to apps most businesses already pay for. No pricing changes were announced - Agent Mode appears to be included in existing Microsoft 365 Copilot subscriptions.