xAI Launches Grok Build: Terminal Coding Agent With Plan Mode
xAI released Grok Build, a terminal-resident coding agent available to SuperGrok subscribers. The agent installs via a single curl command and introduces Plan Mode — which forces it to show a complete execution plan before touching any files — a direct answer to "agent goes off the rails before you notice." Parallel subagents split tasks across a repository, while a headless -p flag enables CI pipeline integration. Grok Build reads existing CLAUDE.md files without modification, confirming the format is becoming a cross-vendor agent-steering standard.
Why It Matters
Three major labs now ship terminal-resident agentic coders: xAI (Grok Build), Google (Antigravity), and Anthropic (Claude Code). The -p headless flag and CLAUDE.md support signal a structural shift from chat-window coding to pipeline-native agent execution.