Perplexity Computer wows, Karpathy kills vibe coding, and OpenAI replaces Anthropic at the Pentagon

A weekly AI roundup covering several major developments: Perplexity launched 'Computer,' a multi-agent desktop worker for non-technical users that automates workflows across Gmail, Slack, Notion, and more. Andrej Karpathy declared 'vibe coding' obsolete, replacing it with 'agentic engineering' — describing agents that autonomously complete complex multi-step tasks. Anthropic's Agent Skills repo gained broad adoption across Microsoft, Cursor, and OpenAI. Cloudflare launched Markdown for Agents, reducing token usage by 80% when AI agents fetch web pages. On the political front, the Trump administration banned Anthropic from federal use, labeling it a supply chain risk, while OpenAI secured a Pentagon deal with weaker human-oversight language than Anthropic had demanded.