---
title: "What Is Grok Build"
type: concept
tags: [grok-build, coding-agent, cli, grok-build-0.1]
updated: 2026-06-24
confidence: high
sources: [raw/web_community-overview-md-2.md, raw/web_community-models-md.md, raw/web_community-release-notes-md.md]
---

# What Is Grok Build

Grok Build is xAI's coding agent and CLI — "a powerful and extensible coding agent." You use it via an interactive TUI, headlessly in scripts or bots, or through the Agent Client Protocol (ACP) embedded in other apps. The TUI is "a rich, mouse-interactive, fullscreen experience for coding with agents."

It is a peer to other coding agents in the xAI ecosystem. Per the release notes, Grok Build "is now available in beta."

## The model: grok-build-0.1

Grok Build is powered by `grok-build-0.1`, "xAI's fast coding model trained specifically for agentic coding, currently in early access." The same model is also available directly on the xAI API so you can "drop it into your own agent loop, IDE integration, or coding tool":

```bash
curl https://api.x.ai/v1/responses \
  -H "Authorization: Bearer $XAI_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{
    "model": "grok-build-0.1",
    "input": "Refactor this function to handle null inputs."
  }'
```

From the model pricing table, `grok-build-0.1` has a **256k context**, priced at **$1.00 / 1M input tokens** and **$2.00 / 1M output tokens** — distinct from the general `grok-4.3` chat/coding model (1M context, $1.25 / $2.50).

## Install

```bash
curl -fsSL https://x.ai/cli/install.sh | bash
```

## Three surfaces

- **Interactive TUI** — `grok` in a project directory. See [[concepts/installation-and-sessions]] and [[concepts/modes-and-commands]].
- **Headless** — `grok -p "..."` for scripts and automations.
- **ACP** — `grok agent stdio` for IDE/tool embedding. Both covered in [[concepts/headless-and-acp]].

See also [[entities/grok-models]] and [[summaries/xai-platform-catalog]].