Grok Build Grok Build
Grok Build is a terminal-based AI coding agent designed for professional software engineering, featuring a unique parallel-processing architecture. It utilizes an inspectable, open-source harness to manage tasks by spawning multiple subagents that operate in isolated Git worktrees.
Version 1.0.13 (August 28, 2026) introduced automated retries for inference failures, improvements to tool call handling, faster session startup with MCP, and enhanced error messaging, following the transition to Grok 4.6 as the default model in mid-August.
As of
- Parallel subagent execution with up to 8 concurrent workers
- Plan Mode for human-in-the-loop review and approval of code changes
- Arena Mode for evaluating competing agent solutions
- Native support for Model Context Protocol (MCP) and AGENTS.md
- Headless mode for CI/CD and custom automation
High-volume sandboxable tasks, test generation, migrations, mechanical refactors, and projects where multiple valid solutions can be explored in parallel.
Complex, deeply nested refactors where reasoning depth is prioritized over breadth, or projects requiring large-scale, high-integrity production architectural changes.
The CLI is free to install, but requires an active SuperGrok or X Premium+ subscription for access. API usage for the underlying Grok Build 0.1 model is billed at $1.00 per million input tokens and $2.00 per million output tokens, while the Grok 4.6 model is billed at $2.00 per million input tokens and $6.00 per million output tokens.
Grok Build is a powerful, cost-effective tool for specific parallel-execution tasks, but it is currently less mature for complex production refactors compared to leaders like Claude Code. Its ability to leverage local-first Git worktrees and parallel subagents makes it a unique, inspectable choice for developers already within the X/xAI ecosystem.
Is Grok Build free?
Grok Build is Freemium. The CLI is free to install, but requires an active SuperGrok or X Premium+ subscription for access. API usage for the underlying Grok Build 0.1 model is billed at $1.00 per million input tokens and $2.00 per million output tokens, while the Grok 4.6 model is billed at $2.00 per million input tokens and $6.00 per million output tokens. Check the official site for current plans.
What is Grok Build best for?
High-volume sandboxable tasks, test generation, migrations, mechanical refactors, and projects where multiple valid solutions can be explored in parallel.
Who makes Grok Build?
Grok Build is developed by xAI. It is listed in the Terminal & CLI Agents category on ai.dosa.dev.
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