Harness Active Open source
Grok Build
xAI's terminal coding agent, with plan mode, parallel subagents, and MCP.
Get Grok Build 2 methods
curl -fsSL https://x.ai/cli/install.sh | bash irm https://x.ai/cli/install.ps1 | iex Pricing
Uses your X plan.
Included in X Subscription plans from Free to Ultra; an xAI API key can also be used.
- Free Free Limited Grok Build usage
- Plus $8/mo Shared AI usage pool; Grok Build included
- Premium $30/mo 4x the usage of Plus
- Super $100/mo 15x the usage of Plus
- Ultra $200/mo 50x the usage of Plus
Prices as listed on 18 Oct 2026.
AboutxAI
Grok Build is xAI's terminal-based coding agent. It runs as a full-screen TUI, headlessly in scripts and CI, or over the Agent Client Protocol, and supports skills, plugins, hooks, MCP servers, and parallel subagents.
Features Verified 6/8 ✓ yes ✗ no ? not verified
?
Worktrees
Keeps parallel work in separate git worktrees?
not verified
✓
Parallel agents
Runs several agent sessions at the same time?
yes
✓
Subagents
Can an agent delegate work to child agents?
yes
✓
MCP
Connects to MCP servers and their tools?
yes
?
Remote access
Can you follow or control sessions from another device?
not verified
✗
Cloud sandbox
Runs work in a hosted sandbox rather than on your machine?
no
✓
Diff review
Includes a built-in diff or review screen?
yes
✓
Plan mode
Has an explicit plan / approve-before-edit step?
yes
Runs inside16
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