xAI just shipped Grok Build, a terminal-based coding agent designed to compete directly with Anthropic’s Claude Code and GitHub Copilot. The early beta launched on May 25 and is available exclusively to SuperGrok and X Premium Plus subscribers, priced at $300 per month.

The core product is a CLI tool, meaning it operates from the terminal rather than a browser or IDE plugin. The “plan mode” forces Grok Build to outline its proposed code changes and wait for your sign-off before touching anything. There’s also an “Arena Mode” that runs multiple models in parallel, letting developers compare outputs side by side.

The CLI version offers a 2 million-token context window. The API model, which became available around May 20, has a smaller 256K context window. Grok Build also supports integration with existing software plugins and an extensible architecture, meaning developers can customize it for their specific workflows rather than being locked into a rigid toolset.

Elon Musk acknowledged that xAI had fallen behind competitors in coding capabilities. Leaks and testing preceded the announcement, and the Grok Build 0.1 model appeared on the xAI API roughly five days before the official beta went live. The company is actively soliciting user feedback through a built-in “/feedback” command in the CLI.

xAI made no mention of tokens, digital assets, or blockchain integration in any of its communications around the launch. At $300 per month, SuperGrok and X Premium Plus subscriptions represent a meaningful revenue opportunity if adoption scales. That pricing is significantly more expensive than GitHub Copilot’s individual tier but competitive with enterprise-grade AI coding solutions.