x.AI plays catch-up with Grok Build, its first terminal-based coding agent

Elon Musk's AI company x.AI is jumping into the coding agent space with Grok Build, a new terminal-based tool. The launch is a late entry into a market that Anthropic defined with Claude Code and OpenAI expanded with Codex. The tool runs as a CLI, is currently in early beta, and is only available to SuperGrok Heavy subscribers.

Functionally, x.AI sticks close to what competitors already offer: a plan mode with step-by-step approval, diffs before every change, parallel sub-agents for larger tasks, and a headless mode ('-p') for scripts. Existing configurations like AGENTS.md, plugins, hooks, and MCP servers carry over.

x.AI is collecting feedback through a '/feedback' command. Anyone who wants to try the tool needs a SuperGrok Heavy subscription.