Grok Build is a terminal-based AI coding agent and agentic command line tool developed by SpaceXAI.
Grok Build is a strong AI coding agent and CLI tool made by xAI. It’s aimed at professional software engineers and complex coding tasks. Launched in early beta in May 2026, it’s available to SuperGrok Heavy subscribers. Grok Build runs straight from the terminal, adding advanced AI to the developer's workflow. Instead of replacing existing tools, it fits smoothly with current project conventions, plugins, and automation pipelines. This makes Grok Build less of an add-on and more of a constant engineering partner that thinks, plans, and works with you.
Plan, Review, and Approve Before Execution
For complex engineering tasks, Grok Build uses plan mode. It creates a clear, step-by-step execution plan before any code is written. Developers can review each step, leave comments, or rewrite the plan entirely, ensuring full control over what gets changed and why. Once approved, every modification surfaces as a clean, readable diff.
Parallel Subagents for Large-Scale Tasks
When a task is too large for a single thread, Grok Build delegates work to specialized subagents that run simultaneously in parallel. Each subagent works in its own worktree. This lets them explore different codebase parts at the same time. As a result, it speeds up deep tasks like performance checks, dependency audits, and cross-service refactors.
Works With Your Existing Stack Out of the Box
Grok Build is built to slot into workflows without friction. It automatically picks up AGENTS.md files, custom plugins, hooks, skills, and MCP servers the moment it launches inside a repository. No reconfiguration is needed. It understands your project's rules and begins contributing right away, on your terms.
Headless Mode and Full ACP Support
Beyond interactive use, Grok Build is engineered for automation. Its headless mode (-p flag) lets it run quietly in scripts, CI pipelines, and bots. Plus, full Agent Client Protocol (ACP) support allows for custom agent orchestration apps. This makes Grok Build just as powerful in the background as it is at the terminal.
