What is Grok Build?
xAI's terminal coding agent with plans and subagents.
Who is Grok Build best for?
Grok Build is best for developers who want xAI's coding agent in the terminal, in scripts and CI, or inside their editor.
Coding in the terminal
Its full-screen terminal interface lets you ask about a repo, point it at files and follow the changes as the agent works.
Large or unclear changes
Plan mode has the agent explore the codebase and draft a plan for your approval before it edits anything.
Parallel agent work
Subagents take on separate jobs with their own context, and worktrees give each agent its own copy of the repository so they do not overwrite each other.
Scripts, bots and editors
Headless mode fits scripts and CI jobs, and ACP lets other apps and IDEs run Grok Build as their agent.
How much does Grok Build cost?
Grok Build is free to start: it has a free tier, and heavier use runs on a paid Grok plan's shared weekly allowance or on an xAI API key billed by the token.
xAI's docs confirm the free tier, which leaves out the faster Grok 4.7 Fast model, but do not list Grok plan prices; paid plans share one weekly usage pool across Build, Chat, Imagine, Voice and the API, with Extra Usage Credits from $5. With an xAI API key, requests go straight to the xAI API, where grok-build-0.1 costs $1 per million input tokens and $2 per million output tokens. Plans and current prices are on docs.x.ai.
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Is Grok Build open source?
Yes. Grok Build's code is public under the Apache 2.0 licence, so you can read it, change it and run it yourself.
On GitHub
27,757stars
- Last commit
- 29 Sep
- Repository age
- 4 months
- Licence
- Apache 2.0
- Self-hosted
- No
- Repository
- xai-org/grok-build
What are the best Grok Build alternatives?
Grok Build is an open source alternative to Amp, Muse Code and Claude Code. OpenCode, Mistral Vibe CLI and OpenHands do the same job and are open source too.
AmpFreeAgent and dev environment for the terminal, Mac and phones, with a cloud machine for each thread.
Muse CodePaidMeta's terminal coding agent with persistent subagents.
Claude CodePaidAnthropic's coding agent in the terminal, IDE and cloud.
OpenCodeOpen SourceOpen source AI coding agent for the terminal, desktop and IDE that works with any model.
Mistral Vibe CLIOpen SourceChoose it when you want a terminal coding agent you can self-host and point at Mistral's coding models.
OpenHandsOpen SourceAn open-source coding agent running with zero setup.
Questions about Grok Build
What is Grok Build?
xAI's terminal coding agent with plans and subagents.
Who is Grok Build for?
Grok Build is best for developers who want xAI's coding agent in the terminal, in scripts and CI, or inside their editor.
Is Grok Build free?
Yes. Grok Build is open source, free to download and run.
Is Grok Build open source?
Yes. Grok Build's code is public under the Apache 2.0 licence, so you can read it, change it and run it yourself.
What are the best Grok Build alternatives?
The closest alternatives on Recaply are Amp, Muse Code, Claude Code, OpenCode, Mistral Vibe CLI and OpenHands.
Where can I try Grok Build?
On its official website, x.ai.
Can I use Grok Build with an API key instead of a Grok plan?
Yes. Grok Build signs you in through the browser on first launch, but for scripts, CI or machines without a browser you can set an XAI_API_KEY instead, which sends requests straight to the xAI API at its per-token prices. It can also run custom models from other providers set in its config file.
What happens when I hit the Grok Build usage limit?
On a paid Grok plan, paid features pause until the weekly allowance resets. You can buy Extra Usage Credits on the web, from $5, or move to a higher plan; xAI notes that credits cost more per action than the usage included in a plan.
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