Microsoft just wrapped its annual Build conference for 2025. The focus this year: AI agents. We got a look at the open agentic web, new CoPilot updates, Linux is now open-source, and the company also confirmed it’s expanding its Azure AI Foundry models list to include Elon Musk’s Grok 3 and Grok 3 mini from xAI. Plus, we hear from OpenAI’s Sam Altman and Nvidia's Jensen Huang.