Microsoft is announcing a new AI-powered Copilot for its Microsoft 365 apps and services today, designed to assist people with generating documents, emails, presentations, and much more. The Copilot, powered by GPT-4 from OpenAI, will sit alongside Microsoft 365 apps much like an assistant (remember Clippy?), appearing in the sidebar as a chatbot that allows Office users to summon it to generate text in documents, create PowerPoint presentations based on Word documents, or even help use features like PivotTables in Excel.