xAI launches Grok Build, its first AI coding agent at $300/month

xAI, Elon Musk's AI startup, has released Grok Build, its first dedicated AI coding agent, now in beta for subscribers of the SuperGrok Heavy plan ($300/month). The tool is described as “a powerful new coding agent and CLI for professional software engineering and complex coding work.” It brings a plan mode that allows developers to review, edit, and approve an execution plan before the AI takes action, aiming to improve transparency and control. Grok Build also supports existing plug-ins and workflows, positioning it as a practical assistant for real-world development.

Grok Build enters a competitive market already led by Anthropic's Claude and OpenAI's Codex, and Musk has publicly acknowledged that xAI has lagged behind. The launch comes after a period of internal restructuring, including a cofounder exodus and a subsequent deal with Cursor that gives xAI access to the Colossus supercomputer with a $60 billion purchase option. xAI is currently seeking user feedback on the early beta to refine the tool and fix bugs, signaling a push to catch up in the AI-assisted coding space.